Lake Park-CS 901001FEDERAL EMERGENCY ,~HNAGEMENT AGENCY
Revised as of October 1, 1989 and 1990'
National Flood Insurance Program
and Related Regulations
*The changes effective in 1990 can be found on pages 322A through
322C (App. A, Part 62); page 37~ ($72.3(a)(1) and (a)(2)),
(§72.3(b)(1) through (b)(6)), (§72.~(c) int~oductor7 text); and
page 37~A ($72.~(c)(2) through (c)(5)).
Federal Emergency Management Agency.. ' § 65.:3
[41 I~R 46986. Oct. 26, 19/6. Redesl~n~ted at date identification and pu~c~ion,
4~ ~ 311~, ~y 31, 19?9. ~d ~ended ~t the ~o~ of the m~ps described ~ P~
48 ~ 44552. Sept. 29. 1983; 49 ~ t~51, 64, on speci~ flood, mu~de (i.e.,
Peb. 8, 198tl mu~ow) ~nd flood-rela~ed erosion
~ 64.6 List of eli~ble communiti~.
The s~e ol flood ~u~ce p~u~n~ [t8 ~ 282T8. J~e 21. 19Sal
~ the Nztion~ ~ood ~ce ~o-
~m (t2 U~,C, t0014128) ~ author- ~ 6~,~ Definitions.
~ed for the "comm~i~ ~et fo~h (a) Excep~ ~ o~he~e pro~ded
~d~ t~ sec~io~ ~e~o~ ~gs ~ p~, the def~tio~ se~ fo~h
~der th~ p~ cont~ue ~ eflect ~l~ Pa 59 of th~ subchapter ~e
re~e~ ble to ~
[41 ~ 46986. Oc~ ~. L9~61 (b) ~or ~he p~ose of t~ p~,
~~ Ho~ P~r r~enc~ to ~ ce~Hi~on b~ a reentered prof~-
p~ sho~s I~ of e~ble COmm~tl~. sion~ en~eer or o~her 9~Y do~
see ~e ~t of C~ S~tio~ ~ect~ ~;- co~titute a w~ty or ~tee of
pe~ ~ the ~S ~ s~on of ~ ;eHo~nce, expre~ed or
vol~e. Ce~Hi~tion of ~a ~ a
PART 65--1DENTIFi~ON AND tha~ ~e ~ ~ acc~ ~ the b~t of
the ce~ie~s ~owlede~
~PPING OF SPECIAL H~RD of ~s~ ~ · sta~emen~ tha~
AR~ : ~ys~ h~ve bee~ perfo~ed
Se~ 1y ~d ~ ~cord~ce ~tP, sold
65.1 ~e of ~ nee~ p~tices, Ce~ica~idn
65,3 R~e=t ~ ~b~ new tec~ the wor~ ~e d~i~et ~ accord~ce
~ ~Lh sold en~eer~ practices ~0
65,4 . ~h~ ~ sub~ ~ew ~c~ da~ pro,de protection ~0~ the b~e
~ ~ no ~e to b~e flood ~evz-
tion de~n~flo~ ~io~ ~ a s~temen~ ._. tha~ the
65.6 ~e~on of h~e flood elev~on deter- stmc~eis) h~ been bu~t accorai~E '
~o~ to the 9I~ be~ ce~ffied, ~ ~ place,
65.~ ~oodw~y re~io~ ~d ~ i~y f~ctio~nE.
65.8 Renew of 9~9osed
~r.
i~.10 ~9~ of ~e~ ~t~ by levee ~ 6~.3 ~quirement to submit new techni-
65.11 ~u~on of ~d d~ ~.
~t~ flood b-~-d ~e~ .~ com~jty's b~e flood elevatio~
65.12 R~ion of flood ~~ ~e ~y ~cre~e or decre~e
raps ~ mflec~ b~ flood eleva~o~ · from physic~ ch~es a[f~ flood-
~ by p~pos~ en~~en~ ~ con~tio~..M ~oon ~ practicable,
65.13 ~t of co~,~ ~b~t~ new but not later t-h~ six mont~ Mter
~~ the da~e ~ch Wffo~ation becomes
A~o~,,. t2 U~.~ t001 e~ ~eq.; Reo~- ' available, a C0m~ty sh~ notify
~ion ~ ~o. 3 of 19U8; ~0. ~212~. the A~i~t~tor of the ch~es by
g 6S.1 ~o~ of p~ sub~tt~ ~c~cal or scientific data
~ accord~ce ~th thM 9~t. Such
42 U~.C. 4104 autho~es the DMec- submission ~ nece~ary ao that upon
tot ~ id~tffy ~d publ~h ~o~- cc~a~ion of those physic~
tton ~th r~ect ~ ~ ~e~
the U~d S~t~ h~ ~e~ flood, ~E~ ~fect~E floo~ con~tio~,
mu~lIde (i.e, mu~ow) ~d flood-re-' ~ pre~m ~t~ ~d flood
lat~ e~sion h~ ~e p~ose of m~ement requMemen~ wffi be
b~ed upon c~ent data.
t~ p~ ~ to out~e the steps a com-
m~ty nee~ to ~e ~ order to ~ [51 ~ ~0~13. Au~. 2f.
the A~ency's effo~ ~ provid~ up-to-
§ 65.4 44 CFR Ch. i (1Q-1-I38 Ed;tion)
§~.~ Right to su~mi~ uew t~clmical daLs. suiL~ble m~l~ a~e reclu~-ed t~ ~id
(~.) A COm,~n~ty h~s · fight to re- ~ ht ~ura2ely loc~t;Lng the prop-
~luest ch~z~es to ~ny of the informs- erty.
tion shown on ~n effective m~l~ that (3) If ~ lel~ally defined p~rcel of l~nd
doe~ not impact flood pl~Ln or flood- ' l~ involved, ~ topographic map
w~y delh~e~tion~ or hue flood elev~- lng present ~round elevations ~nd d~te
~~, l~a~. or p]~metfic de- wheth~ ~ le~y defied p~cel of
~. ~uch g' subm~ion ~h~ ~ude ~d ~ ~ be ex~ud~ from the ~ea of
~pprop~te ~ppo~ do~men~tion sp~ flo~ h~d sh~ he b~ed
~ ~cor~ce ~th t~ p~ ~d ~y upon ~ comp~on of the ~o~d ele-
Be ~b~tt~ ~t ~y t~e. ~io~ of the p~cel ~th the elev~-
(b) ~ requ~ for ch~ ~ eff~- t[o~ 'of the b~e floo~ ~ the
tire m~ps. o~er ~ those ~ti~ted elev~tio~ of the ~tMe le~y defied
by ~ m~t be ~e ~ ~ by p~cel of ~d ~ ~ or ~hove the ele-
~e C~ef ~u~ve Officer of the va~o~ of ~e b~e floo~ the
~mm~ty (CEO) or ~ offic~ desi~- ~ be ~ud~ f~m the ~e~ of ~pe-
~ted by the ~O. ~ho~d ~e ~O ~ flo~ ~
d~ce ~ pro~d~ ~t~ the ~O ~e ~e~o~ of ~e lower floor
or d~i~ee ~ be~ requited: to do ~ h~t] ~d the low~
de~e~tion. ~ to whether ·
flood
h~d
he
b~ed
upon ~ ~mp~on of ~e e!ev~tion of
~d~ ~ no ~. to b~e · the low~ fl~r (~clu~
(~) D~ ~~/or ~o~ph- ~t ~e '~ ~e elev~tion of the
flood h~d (~~ V' zon~ ~d ~e. low~ ~t ~e ~e ~t or
flood~) ~t ~y be fe~le ~ el~ ~ove,~e ele~on of the b~e floo~
~e ~e~ ~ e~h f~ ~0ve ~e. the ~c~e m~F be excluded f~m
h~e flood elev~om S~c ~d the ~e~ of ~ flood h~ '-
t~~ ~fo~tion ~ ~ppo~ ~ r~ (5) D~- ~ su~t~ the b~e
of sp~ flood ~d of · s~ct~e ed · ~ood r~ce S~udy (~S),
or p~ of ~d ~t h~ be~ ~e~t- ~t ~ ~ be ~ to ~ub~te
~ by the p~ement of fi~] ~ ~- ~e-b~e floo& Othe~e, ~ pro~d-
dude the fo~o~ ~ b~ ~ ~u~ofi~ttve ao~ce, such
(I~ A. cory of the r~orded deed ~- ~e U~. ~ Co~ of ~ee~,
~ ~e Ie~ .d~p~on of the U~. ~Io~ S~ey, U~. So~ Con-
prope~y ~d the off!ci~ r~or~tion s~on Se~ce, ~ ~d Ioc~ w~ter
~o~ion (~eed book vob~me ~ r~o~ deRWent, or tec~
p~e n~ber) ~d be~ ~e ~ of ~ prepped ~d c~ff!ed by · re~-
(e.~. Cowry ~k or ~rder of ~b~t~ ~ ~e flood elevatio~
Dee~). ~ve not pre~o~ been es~b~he~
(2) ~ ~e pro~ h r~o~ on · hy~c ~]~o~ ~y ~o be
plat ~, a ~y of the r~ord~ plat
prope~y ~d the offl~ r~o~tiou ~e ~e ~d ~e to or ~ove
~o~on (p~ book rob]me ~d the b~e flo~ ~e~tion ~d the
p~e n~b~) ~d be~ the ~ of quit ~ ~ ex~ion from ~ ~e~
the ~Dp~p~ ~rd~tton o~ ~ of ~i~ flood h~d ~clud~ more
the pro~e~ ~ not ~~ on a pla~ t~ · ~le ~ct~e or ~ s~le lot,
~p, co~t~ o~ ~he ~ ~p or other It m~t be demo~ted that f~ ~
352
" Federa! Emergency' ,A~agement Agency ~.~ § 65.6
not settle below the elev-a, tion of the § 6,3.6 Revisi~2n of hue flood eleyafion
b~e flood, and that the fm is axle- termination~
quately protected from the forces of
erosion, scour, or dilferential settle- (a) General condilion~ ~rnc! gala
quirerAen~. (1) The m.~ppor'tiug data
merit ~s described helovn must include a/1 the information
(i) Pill must be compacted to 95 per- I~EIvtA needs to review and evaluate
cent of the m~/m-m density obtain-
able with the $~.odaxd Proctor TEst the request. Th/s may involve the
method issued by the American $ocie- questor's performing new hydrologic
~nd hydra ,u!ic ~-nalysis aad delineation
ty for Testing and M~teria~s
Standard D-698). This requirement of new flood Blain boundaries ~.~d
applies to fill pa~s prepared for resi- floodways, as necessary.
dential or commercial structure four- (2) To avoid diacontinuities between
dations and does not apply to ruled the reviaed ~.nd tw_revi~ed flood data,
~rea~ intended for other uses. the rteces~ary hydrologic and hydrau-
(ii) FU1 slopes for l-:a~ materi=]~ Uc analyses sub,trod by the map re-
vision requestor must be extensive
are not steeper than one ve~,ical on
one.and-one-hall horiz6ntal unless enouEh to ensure that a Io~ical tr~---~i-
tion can be sho~-n between the revised
substa,ntiatinE data ]ustilyin= steeper
slopes is submitted, flood elevations, flood plain hotrod-
(iii) Adequate protection is provided aries, and floodways a~d those devel-
fill slopes exposed to flood waters with oped pre,'loudly for area-~ not aZfected _.
by the re'~isiom Unless it is demon-
expected velocities durinE the occur-
ronco of the ba~e flood of five feet per strmted tha~ it would not be appropri-
second or less by covertu~ them with ate, the revised s_nd unrevised base
grass, vines, we.~ts, or st.-~ilar veEeta- flood elevation~ must ma~ch within
tion undergrowth. : one-hall foot where snch t,--an-~itions
(iv) Adequate protection is provided occur.
fill slopes e.~posed to flood waters with .(3) ~evi~ions cat, not be rnnde based
velocities durinil the ocmu'rence of the on the efXects of proposed projects or
base flood of greater th~n five feet per future condition~. Section 65.8 of
second by a_~morin~ them with stone subc.hapter contain-~ proviaions for ob- -
or rocks!ope protectiom' tainin~ conditional approval of pro-
(7) A revision of flood plntn de]inea- posed pro jo. cra that may effect map
tions b~ed on fill must demo~.str~te cha~Ees when they are completed.
that a~y such fill h~s not resulted in a (4) The datum ~nd date of telereP-in=
floodway encroachment, of bencbr~!~, H any, to which the
(b) Ne',o topo~ra~Aic gala The pro- elevations are referenced mu~t be indi-
cedures described in pzr-agrapl~ (a) (1) cared.
t. hrough (5) of this section may be aJ~o (5) ~aps ~ not be re~-lsed when
followed to re-~ues~ ~ map revision clhchar~es ch~n~e as a result of the
when no physical changes have oC- use of an a!ter-.~tive methodology or
cuffed in the ~rea of special flood data for computL'~l~ flood dhchar~es
hazard, when no fill has been placed. -~le=~_~ the chav. ae ia statistically .sig-
~nd when the natth--a/ ground eleva- nifica~t as motored by a confidence
tio,~-s, as evidenced by new topo~r-~phic limlta analysL~ of the new disc.barge e~-
maps, more detailed or more ~ccurate timates.
than those tcsed to prepare the m~p to (6) Any compu~.er program
be :evi.seck are shown to be above the used ~o perform hydrologic or
elevation of the base flood.
(c) Certification requirem~ The hydraulic analyses in suppor:
ite-,~-~ required in paragraphs (a) ¢3) of a flood insurance map
and (!) and (b) of this section shall be vision mus~. mee~. all of ~he
certilied by a .registered professional
eniineer or Ucensed land surveyor, following criteria:
Iten~ required in ps~-a~-~ph (a)(6) of (i) I~ ~-'st have Been re-
tl%~ section sh~l be ce~ffied by the viewed and accepted by a
corer-uterUs ~ pe.-'n~t offlc!~ a,
re~mtered profe~iona/en~.neer, or an governmental a~ency res pons
accredite~'~so[~ engineer. Such cert[fi- ble for the implemea~a~ion of
c~tion~ ~re ~ubJect to the prov~ions of pro, rams for flood control
§ 6~.9- of this subchapter.
(d) SuSr~on proce~re~ A~ re- and/or the regulation of
(luesta -~hall be ~l~l~tted to the appro- flood plain lands. For com-
priate F~_~ Regional Office servicin~ purer pro,rams adopted by
the co~unity'~ ~.eo~phic ~res.
non-Federal a~encles, cer~i-
[s~ F~ -~0~3. Au~. :~. ~as] 353 flca~ion by a respons ible
'44 C~R Ch. I (10-1-85 Edition)
. (9) A hyd ~gic or hydraulic ann/y-
agency off~ci,._ mus= be pro- ~s for a floo,~-g source w~thout est~b-
vtded which .sta=es =hat the Bshed base flood elevations may be
program has been r~viewed, performed for only the 100-year flood.
tested, and accepted by that (10) A rev~ton of flood p~n
ttoms based on topograpb/c changes
agency for purposes of design mu~t demonstrate that any topograph-
of flood control structures lc changes have not resulted in
· or flood ~lain land use floodway encro~cb, ment.
(11) DeNne~ons of flood
regula=io.n, boundam4es for a flooding source with
(ii) It must be well-docu- estabN.shed base flood elevatiorm must
mented including source codes pro~dde both the 100- and 500-year
flood plain boundaries. For flooding
and user's manuals, sources without est--blished base flood
(iii) I= mus= be available elevations, only 100-year flood pls/n
to F~4A and all presen= and bounda~es need be submitted. These
boundaries should be shown on m toDo-
future parties impacted by ~r~ph~c map of suit,able sca/e and con-
flood insurance mapping de- tour ~ervaL .
veloped or amended through (12) If a co-,~-,,~ty or other pa-tl
seeks recognition from ~ on its
=he use of the program. For Fa'mM or ~ that ~n a/tered or re-
programs no= generally avail- located Portion of a watercourse pro-
vides protection from. or mitigates po-
-'able from a Federal agency, tentls/hazards of, the base flood, the
~he source code and user's A. dm~-~trator may request specific
manuals must be sent to FEHA documentation from the
certifying tha~ and describing how,
free of charge, with fully- the provisions of § 60.~(b)(?) of
documented permission from subchapter will be met for the particu-
Lar watercourse involved. Tb~.~ docu-
the 'owner that F~"W~A may re- ment~ttou, which m~y be in the form
lease the code and user's of a written statement from the Corn-
manuals to such impac=ed m,,~ty Cider Executive Officer, an or-
~m-ce~ or other legislative actforg
patti.es, shall describe the nature of ~he
(?) A revved hydrologdc analysis for tenance ~cti~ties to be performed, the
flood~n_~ sources with established base frequency with wh/ch-they will be per-
flood elevations must tnclude eva/ua- formed, and the title of the loca/com-
tton of the sa~ne recurrence interva/(s) mum/t¥ offices/who will be responsible
studied tn the effective FA~, such as for assuring that the m,-~ntenance ~c-
the 10-, 50-, 100-, and ~00-yes. r ~lood t/vities ~re accompLMhed.
d/scha~es. (13) Notwithstam~.g any other pro-
(8) A revved hydraulic ans/ysis for. a visions of § 65.6, a com~umlty
flo.6dtng source with established base subm/t, Lu ~eu of the docur-entatlon
flood elevations must h~.clude eva/ua- specified tn § ~.6(a)(12), certification
tlon of the same recurrence tnterva/(s) by ~ reg~tered professions/ engineer
studied in the effec",,ve FIS, such sm that the project has been designed to
the 10-. 50-, 100-. and SOO-year flood retain its flood carrying capacity with-
elevations, and of the floodway. Unless out periodic ma/ntenance.
the basis of the request is the use of (b) D~= re~rezment= for correc:L-~
an a/tern,attve hych-mulic methodology m~p e~-ror~ To correct errors in the
or the requestor can demonstrate that origins/flood ana/]~is, technics/ datm
the data of the original hydrau~c com- sub~-~ions sba/1 inc/ude the foHow-
puter model ts unavailable or ~ts use is Lng:.
tnappropriate, the ama/y~is shall Be (1) Data Identifying mnthen~tica/
m~de using the r~roe hydraulic com- error~
puter n~odel used to develop the base (2) Data tdentMying measurement
flood elevations shown on the effec- errors and providing correct measure-
Mve .~ood w-~urance l~te 1VIaD ~nd ments.
updated to show present conditions tn (c) D=g= re~u~rern~nt~ for
the flood pls/n. Copies of the tnput p/~s~c=/ co~{~{on=: Revisions based
and output data from the origina/and on the effects of physics/changes thmt
revised hydrAu~.c analyses shall be have occurred in the flood pls/n sba/1
submitted. ' tnclude:
Federa! Emerge.ney Management Agency § 65.7
(1) ~=ng~/ectin ~dro;o~cco~- new hyd o~c, h~a~i~ or t~po-
~itio~ ~e /o~o~g da~a m~ be ~ap~c da~ ~re berg ~co~o~te&
~b~t~e~ (e) Data req~i~e~ for
ii) Oene~ deception of' ~he rating im~rove~ ~e~o~. ~equ~
ch~ (e.E., ~ ~ve~ion cboe1, for re~io~ b~ed on the ~e of ~-
or de~en~ion b~). proved hy~olo~c or hy~c me,h-
'tH) Correction pl=~ for ~-buH~ odolo~ sha~1 ~c!ude the
(i~) New hy~olo~c ~n~Ys~ ac- (1) New hydrologic ~ys~ when ~
co~ for the e/fec~ of :he ~ILem~tive hy~olo~c methodolo~ h
ch~E~, be~
(iv) New hy~uHo ~ys5 ~d pro- (2) ~'ew hy~ulic ~lys~ ~d flood
f~ ~ the new flood ~c~e elevation profiles when ~n
v~u~ resetS= from ~he hy~o!o~c b.~Tolo~c or hy~ulic me:hodolo~ ~
~ys~. . bein~ proposed.
(v) ~e~ de!~e~tio~ of the flood (~) ExDl~:ion ~ to why ~he
(2) ~a~ges ~fecting hvg~=~ic con- :he ori~l methodology.
ditio~. The foHo~ d~ta sh~ be (i) ~e~ed de!Lne~io~ of the flood
sub~t~ Dla~ bo~nd~rie~ ~d 5oudw~y b~ed
(D Oener~ d~=iD~ion of :he on ~he new ~ly~(~).
ch~Ees (e.E.. ch~eli~ion or new (f) Ceri~ication req=ir~n~ ~
bdd~e, c~vert, or levee). ~lys~ ~.d d~a ~ub~ted b~ the re-
(iD Co~cfion ~1~ for ~-h~ quester sh~ be cer~ied by · re,-
coniston. ~ered profe~ion~ en~eer or Hc~ed
(iH) New hy~ic ~alys~ ~d l~nd s-~;e!or, ~ ~DpruDfi~:e, subjec:
5ood elev~:ion profiles acco~t~g for ~0 the deflation of
the ef/ec~ of the ch~ges ~d ~Lng ~ven ~ ~' 65.2 of :h~ subch~p:er.
the o~g~ flood ~=ge v~lues Cg) Subm~o~ ~rocedures. ~ re-
upon w~ch ~he od~ m=D ~ b~e& ques~ sh~ be sub~::~ to ~e
(iv) Re~ed de~ea:io~ of the flood D~:e ~1,~_ Re~o~ Office se~c~g
~1~ bo~d=ies and 5oodway. :he co=~Cy's geo~D~c =e~
(3) ~=nge= imvoiving logographic [51 ~ 3031~. Aug. 25, 1986, M ~ended
condition. The foHo~g ~ s~H 53 ~ 152=9, ~y 6, I~88]
be sub~tte~ - m
(i) Oene~ desc5Dtion oi the ~ 6$.lm Floodway revhions. -.
Ch~g~ (e.g., ~g or ii~g). (~) ~er~ ~oodway data ~ devel-
su~ ~ spo~ elevator, cro~ sectlo~ ~ce S~u~es ~d 5 u$i~)xed by co~u-
~m~g p1~m, or conto~ eps. .- ~ttes to select ~d mdopt floodwmys ~
(iH) ~e~ed de~eatio~ of the flood pm~ of the Mood p~ m~ement
pla~ bo~d~ ~d, E nece~a~, pro~ requ~ed by t 50.~ o~ t~ sub-
~oodwmy. chapter. ~en i~ h~ been dete~ued
id) Dat~ re~uir~3 /or inco~o- by a comm,~n!ty that no pmti~ble ~-
temm~ives exit ~ re~g :he bo~d-
~io~ b~ed on the ~e oi ~proved ~es oi i~ Dre~o~ly ~opted flood-
hy~olo~ hy~c. or topo~V~c w~y, the proced~es be!ow sb~! be fol-
data sh~ ~clude the ioHo~.g da~ lowe~
(1) Dm~ that ~e believed to be (b) Dctc req~ir~ ~
better th~ those ~ed ~ the ori~ ~en m Hoodwmy re,ion 5 reques~d
~ys~ (such ~ ad~tion~ ye~ oi
stre~ sge ~tm). ~ ~ocimtion ~th ~ ch~ge to
flood elevation, the data requ~
(2) Doc,,~en~on of ~he so,ce ol men~ of f ~.~ sh~ ~o be appli~-
-the ~m. ble. ~ edition, the io~o~ docu-
(~) ~xpl~ation ~ to why :~e ~e of men~tion sh~ be sub,rte&
the new ~ ~ ~prove the re~ (1) Copy oi m public no~Ice ~t~but-
of the o~ ~mlys~. ~ by the co~m~ty s~t~ the com-
iC) ~e,,~ hy~olo~c ~ys~ m~y's ~tent to re~e the floodwmy
where hy~olo~c dat~ ~e berg Lucor- or ~ statement by the co~ty
po~te& i~ h~ not~ied mH ~iected prope~y
(5) ~e~ed hy~c ~ys~ ~d o~e~ ~d. allected ~djacent j~c-
~ood elevmtion proiHes where new hy-
~olo~c or hy~ic da~ ~e berg (2) Copy oi ~ letter not~y~g the
~co~orm~d. prop~te ~te regency oi the 5ood-
(~) ~e~ed 'de~ea~o~ oi ~he flood wmy re~mion when the ~tate h~ J~-
pla~ bo~es ~ud 5oodway where
§ 6~q.8 44 CA:R Ch. I C10-1-88 Edition)
diction over the floodway or it~ adop- (iH) The floodway limits must be set
t/on by communities participating in so that combined effects of the past
the }CFI1~. encroachments and the new floodway
(3) Doc-mentaUon of the approval limits do not increase the effective
of the revised floodway by the apDro- base flood elevations by more than the
pr§ate Sta~e agency (for corer-unities amount specified in § 60.2(d)(2).
where the State has jurisdiction over Copies of the input and output data
the floodway or its ax§option by com- from the original and mod§lied com-
munities participating in the NFIP). purer models must be submitted.
(4) Engineering ~.nalysls for the re- (3) Delineation of the re~-l~ed flood-
vised flood'a'ay, as described belo~~. way on a copy of the effective ~NFIP
(i) The floodway analysis must be mad and a suitable tol~o~-raDh[c maD.
performed using the hydraulic
l)uter model used to determine the (d) Certification r¢¢uire,~tents. All
proposed base flood elevatior~, analyses submitted shall be certtiied
(il) The floodway lir-{ta must be set by a registered Drofesalons/ enTineer.
so that neither the eHective base flood .411 topoiTaphic data sba/1 be certified
elevations nor the proposed base flood by a registered profes~iona/ en~_-.eer
elevations if less than the effective or licensed l~nd surveyor.
base flood eleva~-tons, are increased by tions are subject to the definition
more than the ~nount specified under civen at § 65.2 of this subchaDter.
§ 60.3 (d)(2). Copies of the input a_nd (e) Subr~/sr/on l~roced=re=. All re-
outpu~ data from the original .and quests that involve changes to flood-
modilled computer models must 'be ways shall be submitted to the apDro-
submitted, priate ~ l~e~onal Office se,,-~icin~
(5) Delineation of the rev/aed flood- the community's geowraDh!c ares.
W~y on the s~tr-e topoEl-ADhic nLaD [51 FR 3(1315. Au~. 2f. 19861
used for the delineation of the revi~ed
flood bound~es. -:
§ ~i.S Review of prol~Sed proieck~.
(c) 'Dat~ re~tt~irements .for. ch~n~es
~ion cIzan~e=.-The roi/owing data shall the cornrn,~ity, wkshing ?~=~&A's com-
be submitt~h me. uts on whether a proposed project,
(1) Items described in Da~craphs (b) i/ built aa .proposed, would justify
(1) through ($) of this section must be map revision may request a Condition-
submitted. .. ... al Letter of l~L%p A!n_ endment or
(2) Eni/nee~.n~ s. nalysls for the tel sion in accordance with P~ 711 of this
vised floodway, as described below: subchapter. The data required to sup-
(i) The original hydr~ullc compute.~'. port such requests are the
model used to develop the establLshed those required ~o support requests for
base flood elevations must be modified revisions in ~ccordznce %~:h § § 65.5,
to include ail encroachrnents that 65.6, and 65.% exceDt as-built ce.,-tificz-
have occurred in the flood pl~i~ since tion is not required.
the e.v,/StinE floodway was developed.
H the 'oriTinal hydr4.ulic computer [51 .-aR ~o~5, Au~. ~-$,
model ks not available, an alternate by- .~ 65.9 Review and response by the Adrnin-
dr~ultc computer model may be used istrator.
provided the alternate model has been
calibrated so as to reproduce the ofigi- H any questions or problems a~--~e
--~ wzt~- surface profile of the oriel- during review, PEM. A will consult the
hal hydraulic computer .model The al- 'Chief Executive Officer of the commu-
ternate model must be then modified nity (CEO), the community official
tO include a/1 encroachments that desiTnated by the CEO, and/or the re-
have occurred since the existing flood- quester for resolution. Upon receipt of
way was developed. ~ revision request, the Administrator
(il) The floodway analysis must be shall mail an acknowled~nent of re-
performed with the modified comput- ce§pt of such request to the CEO.
er model using the desired floodway Within 90 days of receivin~ the re-
~imita. quest with ail necessary kfforrnzUon.
~56
Federal Emergency Management Agency § 65.10
the A~ministratoff shall notify the determination by ~ as to how
ClEO of one or more of the followin.r, str~t.cture or sl~stem ~dll perform in-
(a) The effective map(-~) shall not be flood event.
'modified; Cb) De~n crib-erie. For levees to be
(b) The base flood elevatton~ on the recognized by F~EMA, evidence that
effective FIi~.~'V[ shall be modHied al-.d adequate desi&m ~nd operation ~nd
new ba~e flood e!evations shall be eso maintenance syster~-~ are in I)lace to
tablished under the provisions of l~art provide re~-sonable ~-~urance that pro-
6'I of thissubchapte~, tection from the base flood exist~
(c) The changes requested are ap- must be provided. The followin~ re-
proved and the map(s) aznended by quirementa must be met.:
Letter of 1~[~I) Revision (LOI~-~); (1) ~'reeboa~ (i) Riverine levees
(d) The ch~-nges requested ~re ap- must provide a mi.~irm~ freeboard of
proved and a revised map(s) will be three feet above the wa~er-surface
printed and distributed; level of the base flood. An additional
(e) The c'nanEes requested are not of one foot above the r~inim~m ia re.
such a simplifier nature as to w-a~-r-~nt quired witbln 100 feet in either side of
a reissu~nce or revision of the flood in- structures (such as bridges) riverward
surance study or maps and will be de- of the levee or wherever the flow is
ferred unt21 such time as a siimific~nt constricted. An additional one-ha~f
chan~e occurs; foot above the m~nir~,~r~ at the up-
(f) An additional 90 days is required stre-~m end of the levee, taperin~ to
to evaluate the scientific or technical not leas th~.-~ the minlrm~m at the
data submitted; or -. downstream end of the levee, is also
(~) Additional data are required to required..'
support the revision request. (ii) Occasionally, e.~ceptio_,,-s to the
[51 I~ 30315, Auc. 25, 19861 .... mlnlm~]r~ riverine freeboard require-
ment described in paragraph
§ 65.!0 ,~fappin~ of o. reas protected by of tb.~ section, may be approved.
le?ee systems, propriate engineerin~ analyses demon-
(a) Genera' For purposes of the stratia~ adequate protection with
N'P~, ~--WLA will only reco~i~.e in its lesser freeboird must be submitted to
flood hazard and rLsk mzppin~ effort support a request for snch an excep-
those levee systems that meet, am.d tion. The; material presented must
continue to meet, ~i~im~m desii~n, op- evaluate the uncertainty in the esti-
erosion,' ~nd ma!ntenanc~ standards mated base flood elevation profile and
that are consistent with the level of include, but not necessa,-Lly be
protection sought through the corn, to an ~e~ment of statistic~-I confl-
prehensive flood pI~in ma~cement dence limits of the 100-year clischar-ge;
criteria estab',_tihed by § 60.3 of th. is chanl~-_s in staEe-dischar~e relation-
subchapter. Accordingly, this section ships; and the sources, potential, and
describe~ the t.vpes of information m~r,jtude of debris, ~e~lirnenl;, and ice
~--~llvf_~.-.needs to recognize, on HF~ 'acc~mulation- It must be ~o
maps, tl~t a levee system provides that the levee will remain structurally .
protection from the base flood. This stable durinil the base flood when
information m,u~t be supplied to .such additional loa.din~ considerations
F~ElVIA by the community or other 'are imposed. Under no circumstances
pa~-ty seekin~ recognition of such a will freeboard of less than two feet be
levee system at the time a flood risk accepted.
study or restudy is conducted, when a (iii) Por coastal levees, the freeboard
map revision under the provisions of mu-~t be established at one foot above
Part 65 of this subchapter Ls soughl; the height of the one percent wave or
baaed on a levee system, and Ul)On re- the ma.xim,,m w~ve runup (whichever
quest by the Aamlnt~tr~tor durin~ the .is ~reater) associated with the 100-
review of previously reco~lized struc- · year stillwater surEe elevation at the
tures. The FEI~~, review will be for site.
the ~ole purpose of establiahtn~ appro- (i'~) Occasionally, exceptions to the
priate risk zone determinations for minimum coastal levee freeboard re-
~ maps and shall not constitute a quirement described in pa-~'a~r~ph
~Sq
§ 65.10 44 Ci=R Ch. ! CIG.1-88 Edition)
(b)(1Xllt) of tlxts sect, ion, may be aD- 1110-2-1913, Chapter 6, Section IlL
proved. Appropriate engineering anal- may be used. The factors that shall be
yses demonstrating ~dequate protec- address_ed in the analyses include:
·tion with a l~-~er freeboard must. be Depth of flooding, duration of flood-
submitted ta sugport a request for [ng, emba~Icment geometry and leng~ch
such an excegtion. The material 9re- of seegage l~ath at critical l~cations,
sen(ed must evaluate the uncer~.aint¥ embankment axtd foundation materi-
in the estimated base flood loading als, emba~l~ment com9actlon- 9enetra-
condttion.~ Particular eml~hasis must tiona, other desi~t factors allecting
be l~laced on thd effects of wave attack seepage (such as drainage layers), a_nd
and overtogl~in~ on the stabLlit¥ of the other destg~ factors affecting embank-
levee. Under no circur~-~_~ces, howev- men( and foundation stability (such as
er, will a freeboard o! 1~-~ thaxt l;wo berm.s).
feet above the 100-year stillwater (5) Settlement. Engineering analyses
surge elevation be acce9ted- must be submitted that assess the 90-
(2) Cloa~re~ Ail ol~enin~ must; be ten(iai and magnitude of future losses
provided wil;h closure devices tlxat are ot freeboard as a result of levee settle-
structural parts of the system during men( and demonstrate that freeboard
operation and design accor~ttng to will be maintained within the
sottud engineering 9ractic~ mum standards set forth in
(3)-~'rn~an/crnent l~rotectior~ ~t~$i- (b)(1) of this section. This analysis
neering analyses must be submitl;ed must address emb=~ment loads, como
that demonstrate that no aI~grecia, ble 9re.~ibillt¥ of emb~r~ent soiLs, com-
ero~on of the levee emb~-U-ment ~ 9res~ibility of foundation soils, age of
be exgected during the ba~e flood, a~ a the levee system, a.nd cormtruction
result of either currents or waves, and comgaction methods. In additio~ de-
t_~t an~icivated erosion will not result tailed settlement analysis usix~ l~roce-
in fail((re oi the levee embankment or dures such as those described in the
founcla~on directly or indirectly COE manual, "Soil Mechanics
throu~ reduction of'tlxe seepage path Desi~n--~ettlement Analysis" ~.,~[
and subsequent instability. The fac- 1100-2-1904) must be submitted.
torn to be adclxesaed in such axlal~'ses (6) In/zrior clr~i~.agr_ Ail alaalysia
include, btit;.are not limited to:-~t.- must be submitted that identifies the
"ed flow velocities (e.~eci~tlly iii COn- sourceis) of such flooai~, the extent
stricted areas); exgected wind and of the flooded area, and, if the average
wave action; ice loading, impact o! depth ta greater ~han one foot, the
debris, slol~e protection techniques; water-surfAce elevation(s) of the base
du.~ation oi floom~ at various sta~es flood. Tlala axmlysia must be based on
a~d velocities; emb~-~l.-rnent and loun- the Joint; l~robability of interior and
damon m~terials;, levee alig~r~ent, exterior flooding and the cagacity o!
bends, and transitions;, and Ievee side facilities (such as drainage Ltues ad
aloges, l~-~gs) for evacua~ag interior flood-
(4) .~m~a;rtYcrn, e'nt ~nd fou~ag'~on
~talrilit~/;.' ~g~.ueertng analy~e~ that C/) OtY~r ..d~ig~. cfi(aria. In .u~que
evaluate levee emb~en~ stability situa~ions, such as those ~here the
must be submitted. The analyses i~ro- levee system has relatively high
vided shall evaluate exgected seel~age -'nerabLlity, ~',f~A n~ay re.~uire that
during loa~in~ conditions aociated other design criteria and analyses be
with the base flood and shall demon- submitted l:o show that the levees l~ro-
strate that seepaEe into or through vide axiequ~te protection. In such ii(u-
the levee foundation and emb~U-ment ~tioms, sound eniineering l~ractice will
will not Jeopardize emba~ment; or be the standard on which PEMA will
founda~on stability. An' alternative base ifa determlnztlons. FEMA will
analysis demonstr~th~ that the levee also 9rovide the rationale for requir.
is desired and const~cted for stabill- 'in~ tlM~ additional information.
~,y a~ln~t loa~u~ conditions for Ca~e (c) Opera~ion plan~ and crit~rio. For
1~' as defin~cl in the U~. Army Corgs a levee sl~cem to he recoTnized, the
of Enl~lneers (COE)manual, "Design operational criteria must be as de-
and Construction'of Levees" (E~ scribed below. Ail closure devices or
358
Federal Emergency Management Agency § 65.10
mechanical systen~or iz~tern~ drai.-~- Gv) ~o~io~ for ~e~o~c ~n~ec-
age, whe~er ~u~ or ~utomat~c. tlon of ~terior ~¢e syste~ ~d
m~t be ope~ted ~ ~cord~ce ~h perio~c operation o~ ~y m~h~d
m olfic~y ~op~ ope~on po~io~ for tes~ ~d t~g
m~ual, a copy of wht~ m~ be pro- pos~. Xo more ~h~n one ye~ sh~
~ded to ~ by ~he open,or when elapse between either the ~pectio~
levee or ~age system reco~tion ~ or ~he operaCioP~.
be~ sought or when the m~u~ for (3) O~,er operaliom pI~ ant c~-
~ Dre~o~ly reco~ system ~ re- ~ Other ope~t~g ~!~ ~d
~ed ~ ~y m~er. ~ oDe~tio~ may be requked by ~ ~ e~e
m~t he ~der the l~M~ction of · that adequate vro:ectiou.M Dro~ded
Fede~ or S~te agency, ~ ~ency specific situatio~. ~ such ~,
created by F~e~ or S~te ~w, or ~ sold emerEency m~gement
agency of ~ ~mm~y 9=iciDat~i rice ~ be the s~d=d upon w~ch
~ the ~. ~ dete~inatio~ ~ be b~
(1) ~o~r~ O9~tIon pl~ for cio- (d) ~fain~ance FI=~ and c~
~ m~ ~clude the foHo~= For levee sys~ ~ be r~o~ed
(i) Doc-men~tion oft he flo~w~- proid~g Dro~tlou from ~e b~e
~= syste~ ~der the j~c~ion of flood, the ~ten~ce c~tefla m~t
Fede~ ~t~ or co~ty officiO, ~e ~ desc~h~ here~ Levee
~at ~be ~ ~ ~er ~=ency m~t be m~ta~ed ~ ~ord~ce
operation =~ti~ ~d demo~t~ion ~th ~ offici~ adopted
t~t ~ficient flood w~g t~e' n~nce pI~, ~d a cody of t~
e~ for the comDleted ope~tion of m~ he pro~ded ~ ~ by the
~ clo~e st~c~ ~du~g neces- o~er 6f the levee sFsMm when recog-
s~ se~i~g, before floodwate~ reach ~tion 5 be~E sought or when the
~eb~eofthec!o~e. :. 91~ for a 9re'ao~!y reco~d
(2) A fo~! P~ of opemSon M- s?stem ~ re~ed kn ~F ~n~. ~
cludi~E sDecHic ~tio~ ~d mi~- m~n~nce ~ti~ti~ m~t be ~der
men~ of respo~ib~ty hy ~du~ the J~ction of a Fede~ ur
~-me or 5tle. agency, ~ agency crez~d by Fede~
(~) ~o~io~ for De~o~c oder- or S~te law, or ~ agency of a commu-
a~on, i~ not 1~ ~a one-ye= ~r- ~ty D~iclvat~ ~ the h~ that
v~, of the clo~e s~ct=e lot t~t- m~t ame ~t~at~
~g ~d ~g 9~os~. for ~ten~ce. T~ Pl~ m~t docu-
(2) Int~or drainage aV=~ ~te~- men~ the fo~ b~oced~e that en-
or ~ge syst~ ~o~t~ ~ s~ that the sta~ty, he/gh~, ~d
levee s~te~ ~y ~ude sto~Ee' ove~ ~ty of the levee ~.d
~e~, ~y ou~e~ p-mp~g s~- ~ociated st~ct~es ~d syste~ are
tio~, or · comb~tlon the~oL Thee m~t~e~ At ~ mi~im,m, m~te-
~zge syst~m ~ be reco~imed by n~ce pl~ sh~ speedy ~he
~ on ~ ~Ds for flood prof,- ~ce acti~ties to be perfome~ the
:ion p~os~ o~y H the fo~o~g frequency of ~heL- pe~om~nce, :d
m(mim~ ~[e~ are ~:luded ~ ~he the De--on bY n~e or title
oberon pl= " ble for ~he~
(i) D~men:tion of the ~ood warn- .. (e) Cerl~c~tion requirmen~. Data
~g sFste~ ~der the i~ct~n of ~ub~ted to support :b.z: a ~ven
Fede~ ~:te, or co~~y oHici~ levee system compE~ ~Ch the
~t ~ be ~ ~ ~er eme~ency t~ req~emen~ se: io~h ~ pat-
ope~:ion ~:i~tt~ ~d demolition ~p~ (b)(1) t~ough (~) of ~h~ sec-
~m: ~cien: fi~d w~ t~e tion m~t be cem~ied by z re~tered
=~ 9o~io~ ol ~e ~e iFste= u-bu:t DI~ oi the levee m~ be sub-
(fi) A fo~ 9~ of oDe~tlon ~- ~t~ Ce~i~tio~ =e sublet to
clung spe~i: ~tio~ =d mi~- ~he deletion ~ven a: i 65.2 of t~
men: of r~po~Fa~ty by ~du~ ~bchapger. ~ lieu of these
D~me or title, req~emen~, · ~eder~ agency ~ith
(~) ~oW~ion lot ~u~ b~ku~ ~or re~9o~ib~t~ ior levee deai~ may
the activation oi auto--tic s~ste~ thy that the levee b~ been adequate-
§ 65.11 o 44 CFR Ch. ! (10-1-88 EdltTon)
ly designed sad constructed to provide proval of such action prior to permit-
protection a~i.-~t the base flood, tin~ the encroachments to occur and
[5I FR 30316, Aug. 25. 1986] shall submit the foUowin~ aa pa~ of
its applic~ttorn
§ $$.11 E-aluation of sand dunes in map- (I) A request for conditional al~prov-
ping coaztal 'flood hazard area~, al of n~p change and the appropriate
initial fee aa specified by § '/2.3 of this
(a) General conc!ilior~. For purposes subchapter or a request for exemption
of the I~'~I;P, ~,~,f~ will consider from fees as specilied by § 72.5 of this
storm-induced dune erosion potential suhchapter, whichever ~s appropriate;
in its deter-re;nation of coastal flood (2) An evaluation of alternatives
hazards n~d risk mappiz~g efforts. Tl-.e which would not result in a base flood
criterion to be used in the evaluation elevation increase above thai; permit-
of dune erosion will apply to prim~ ted under pn~'~i~'~pb.s (c)(10l or
frontal dunes as defined in § 59.i, but of § 60.3 of ~ subchapter demon-
does not apply to a~fftcInlly desiiTted str~ting why these alternatives n.re not
az~d constructed dunes thai; are no~ feasible;
weE-established with long-standing; (3) Documentation o1~ individual
vegetative cover, such as the place- legal notice lx~ all-impacted proper'.y
meni; of sa~d materials in a dune-like owuers witl~in and outside o1~ the com-
~orm~tion. m,~it.~y, exl~laining the impac~ of the
(b) ~valua~ion criterion. Prkna~y proposed ~ction on them property.
frontal dunes will not be considered a~ (4) Concurrence of the Chief Execu-
effective ba=,-riers to base flood storm ti~e Officer of a.~y other communities
surges and associated wave action impacted by the proposed actions;.
where the cro~-sec~ional ~rea ol the (5) Certification that no structures
pr~m~y frontal dune, aa measured are Ioc~ted in ~-reaa which would be
perpendicular to .the ~hor~-li~e a~d impacted by the increased base flood
gbove the 100-year stillwater flood ele- elevation;
v~ion n~l seaward of the dune crest, (6) A request for revision of base
is eq~l to," or le.~ th~ 5~-0 squ~re flo~d elev~i;ion determ;~tion accord-
· ' " lng to,. the provisions of-§ 65.6 of this
(c) ~.zcei~gion~. Exceptlo~ts to ~te . pp-rt;.
evalu~tion criterion may be t~=a~ted ('f) A request for floodway revision '
where it c~n be demonstrated through in accordance with the provi-~ions of
authoritative b.i~rical documentation § 65.'/of this pn~;
th~ the primary frontal dunes at a (b) Upon receipt of the
specific site withstood previou~ ha.~e tor's conditio~! approval of map
flood ~torm surEe~ a~d associated chaz~ge and prior to approvinE the pro-
wave ~ction.
_ posed encroa~:hments. ~ community
[53 PR 161~/9, May $. 19881 shall provide evidence to the
'~ .... trator of the axtoption of flood plain
§ 61.Z2 Re~ision of flood insurance ate maJ=a~emeni; ordtna~lces incorpor~tin~
maps to reflect haze flood elevations the increased base flood elevations
caused by proposed encroachrnent~ artd/or revised floodway refiectin~ the
(a) V~hen a cor-.~.~;ty proposes to post-project condition.
permit encroachments upon the flood (c) Upon completion of the proposed
plain when a reg~latory floodway has encroachments, a community sh~lI
provide as-built certifications in
not been axtopted or to permll; eh- cord-~ce with the provisions of § 65;3
croactunenta upon a~ adopted regals- of this par~. ~ne A~-1~-~tr~tor
tory floodway which will cause base
flood elevation increnaes in excer~ o1~ Initiate a firtal map revision upon re-
those permitted under paragrapl~ ceipt of such certifications in accord-
(c)(10) or (d)(3) of § 60.3 of this sub- n~ce with Parc 67 of tht~ subchapter.
chapter, t~he co~tty shall apply to [§3 PR 162~9. M~y 6. 19881
the Admiz~t~r for conditional ap-
360
"*'- Federa! Emergency ,~a,n.nagement A~;e.ncy -. §65 .'13
part 70 of this chapter shall
not apply to FIR~i revisions
§65.13 Mapping and map involving alluvial fan flood-
revislon~ for areas lng. In general, elevation
subject ~o alluvial fa~
of a parcel of land or a,
flooding, structure hy fill or other'
means, will not serve as a
This sectio~ describes the basis for removing areas sub-
procedures to be followed and ject to alluvial fan flooding
the types of information FF~iA
from an area of special flood
needs to recognize on a NFI? hazards.
map =hat a structural flood (c) FEM,. ~11 credi= on
control measure provides pro- ~IP maps only major struc-
tection from the base flood rural flood control measures
in an area subject to allu- ~aose design and construction
vial fan flooding. This im- are supported by soumd engi-
formation mus~ be supplied meeting analyses ~nich demon-
to'FEM-~ by ~he community or s~rate that the measures ~!1
other party seeking recognl- effec~ive!y eliminate alluvial
~ion of su~n a flood control fan.flood hazards from the
measure at the time a flood
area protected by such mae-
risk study or restudy is con-
sures. The provided analyses
ducted, %Znen a map revision
under'~he'provisions-of part must include, but ara not
65 of ~his subchapter is necessarily !imTted to, ~he
pought, and upon raqu~S= bY fo!~owing: '
'the Administrator during the (1) Engineerin~ analyses
review of previously recog- tha~ quantify the discharges
and volumes of water~ debris
nlzed flood control measures. '
The FEM_~ review will be for and sediment movemen~ associ-
ated with the flood that has
the sole purpose of estab-
a one-percent probability of
llshing appropriate risk zoma
date.~minations for ~N'FI? maps being exceeded in any year a~
the apex under current ~=t~.
and shall not constitute a
shed conditions and under Do-
determination by FEM.. as to
tentia! adverse conditions
how the flood con~ro! measure
will perfo.--a in a f~ood event. (e.g., deforestation of the
- watershed by fire). The po-
(a) The applicable provi- tential for debris flow and
sions of §§65.2, 65.3,.65.4., sediment movement must be
65.6, 65.8 and 65.10 shall assessed using an engineering
also apply to FIt~{ revisions method acceptable to F~W-~.
involving alluvial fan flood- The assessment should con-
ing. sider the characteristics and
(b) The provisions of §65.5 availability of sediment in
the drainaEe basin above the
regarding map revisions based
on fill and the provisions of apex and on =he alluvial fan.
44 CI 2h. ! (10-.I-88 Edition)
(2) Engineering analyses sores on flood hazards in all
showing that the measures
areas of ~he fan (includin~
will accommodate the es~i- those no~ protected by the
mated peak -discharges and flood control measures), and
volumes of. water, debris, and the design and maln~enance
sediment,' as determ/ned in requirements of the' measures,
accordance wi~h paragraph (c) were reviewed and approved by
(1) of ~his section, and will the impacted communities, and
~t~hstand ~he associated also by State and local agen-
hydrodynamic and hydrostatic ctes that have jurisdiction
forces, over flood control activities.
(3) Engineering analyses (e) Operation and
showing that the measures
nonce Plans and Criteria.
have been designed to with- The requirements for opera-
stand the potential erosion ' tion an~ maintenance of flood
and scour associated .with
control measures on areas
estimated discharges. -subject to alluvial fan
(4)' Engineering analyses flood/nE shall be those
or evidence showing ~hat the
specified under §65.10, para-
measures will provide protec- graphs (c) and (d), when
tion from hazards asso¢ia~ed apPl/cable.
with the possible relocation (f). Certification Require-
of flow pa=hs from -other
.....merits. Data subm/tted to
parts of the fan. support that a given flood
(5) Engineering analyses control measure complies ~h
that assess the effect of the the requiremeu=s set forth in
project on flood hazards,.in- paragraphs (c)(1) through (6)
eluding depth and velocity of of this section must be
floodwaters and scour and certified by a registered
sediment deposition, on other professional engineer. Also,
areas .of the fan. certified as-built plans of
(~) Engineering analyses the flood control measures
demonstrating that floodin~ must be suhmit~ed. Cartifi-
from sources other ~han the cations are subjec~ to ~he
fan apex, including local definition given at ~65.2.
runoff~ is either lnslgnifi-
cau~ or has been accounted
for in the design. §65.14 List of communities
(d) Coordination. FEMA. subm/tting new technical
will recognize measures that data..
are adequately destgne~ and
constructed, provided ~hat: Th~s~tion Dro~d~ ~
evidence is submitted ~o show UL~t of com~un/ti~ where
that the im~ac~ of the mea-
'Federal Emergency Management Agency § 66.3
~d~ Due ~ the need for e~e~t- (2) ~ot~f~ loc~ offici~ of the
~ the modMi~tio~, the re~ed ~p pro~ of ~eys, ~tu~e~.
~ ~e~y ~ effec~ ~d the ~p~e~l tlo~. ~d of pros~tive f~,
pe~od co~enc~ on or ~bout the el- ~on~ with d~t~ ~nd m~tho~ em-
f~tive ~te of the monied ~p. ~ ployed ~ re~ch~ such concision;
~te~ ~e, fo~o~ed by a f~ ~e,
~ ~t the re~ed m~p effective date. (2) Enco~e Ioc~ ~e~natton
lo~ reposito~ ~d the ~e ~d ~d- s~,ey~, stu~es, ~d ~vesti~tio~ so
~e~ oi the C~ef ~e~tive Officer ol tha~ Lnterested ~e~o~ ~ have
. t~e cow~y. The magis) ~ (are) el- o~po~ty to b~ relev~ da~ to
fective for both flood ~1~ m~nage- the a:tention cf the com~-~ity ~d
merit ~d ~~ce p~os~, the
[51 ~ 3031~, Au~. ~. 1956. ~de~i~ated (4) C~ out the re~po~ib~tt~ for
a~ 53 ~ I62~9. ~y 6. ~9~] co~tation ~d coor~lon ~e~
forth ~ f 66.5 of thM
~ ~der ~ s~Aon ~d not ~ed ~ [~1 ~ 4~988. O~- 26, 1976. Redesigned ~t
~e ~ see ~e ~ of ~ S~o~ ~- 44 ~ 311T7. ~[~y 3L 1979, ~d ~end~
36028. ~eD~. 4, 1985]
PART ~ COHSULTATIOfi WITH :
LOCAL OFFICIA~ ~ 66.2 Definit~on~
The def~tio~ set fo~h ~ P~ 5g
Sec. of t~ ~ubch~pter ~e appU~hle
66.1 ~e of p~ t~ D~
~d fl~ elocon ~udy docket. ~ ~ 31~TT. ~y 3~,
~on office; ~ ~6.3 EsmblM~ent of co~uni~ c~e
'66.5 Respo~ibffiti~ for co~tion ~d file ~d fl~ elev~tion ~dy d~ke~
coor~oa .: (a) A lEe.'sh~ be ~b~h~d for
A~o~:; 42 U~.C. 4001 et seq.; ~eo~- e~' commnmlty ~ the t~e
~on P~ No. 3 of 1978; ~O. 12127. ~ide~tion ~ ~ven ~ stud~g that
COmm-~ity ~ order ~ ~b~h
~ 6~.1 ~ose of p~ .. whether or not it con~i~ flood-prone
(a) ~e p~ose cf t~ p~ ~ to ~e~. There~ter, the f~e sh~
comply ~th ~ection 206 of the ~ood clude copiez of ~ co~pondence
D~r ~ot~tion Act of 1973 (42 ~th olflci~ M that comm'~Jty.
U.~.C. il07) by ~t~~g prate- the com~mity M ten~avely ldenti-
d~ for. flood elevation dete~ina- lied, provided ~th b~e flood e!eva-
tio~ of Zon~ Al-30. ~, ~ AO ~d tto~, or s~ended ~d re--ted,
Vi-~0, ~d ~ ~t~n the co~m~ty doc-mentation of snch ~tio~ by the
so that adequate co--ration ~th the Aami~t~tor sh~ be plied ~ the
comm~ty offici~ sb~ be a~s~e~ domm,mlty f~e. ~en M a map ~
(b) ~e proced~ ~ t~ p~ sh~ mi~t~tively r~c~ded or
apply when b~e flood elevatio~ ~e ~ter notice. ~der P~ 63 of t~ sub-
to be dete~i~ or monied, chaDter or the co~,,~ity succe~f~y
(c) ~e A~t~tor or hM dele- rebu~ [~ flood-prone desi~ation, the
ia~e s~ f~e ~ be ~~ed ~def~tely.
(1) S~ffi~y requ~t t~t the (b) A 9o~ion of ~e comm~ty fee
c0mm~ty ~ub~t 9e~en~ da~ con- sh~ be desi~ated a flood elevation
c~g flood ~~, floo~ exge~- gtudy co~tion docket ~d sha~
ence, ~I~ t9 avoid 9otenti~ h~, ~b~hed for e~h co~m~ty at the
est~ate of h~to~ ~d 9rosgective t~e the coni~t ~ awaked for a
economo ~act on the comm~ty, flood elevation study. ~e docket
§ 66.4 44 CFR Ch. I 00-1-88 Edition)
include copies of (1) all correspond- Cd) Appropriate oHicials of the eom-
once between the Adm~ni-~trator s.nd munity shall be fully Informed of (1)
t2~e comm,,,,fty concerning the study, el~e responsibilities placed on them by
reports of any meetings amon; the the Proi~a~n, (2) the
Agency relsresentatives, property 13rocedures followed by the Federal
owners of the comrmm;ty, the s~te ~.rnergency 1viaxtagement AEency, (3)
coordin-~tlz~ agency, study cont.-~ctors the community's role k-~ establishing
or other interested persons, (2) rele- elevations, a~d (l) the responsibilities
vaxzt publications, (3) a copy of the of the co~nmtlnity Lf it pa.-tlcipates or
completed flood elevation study, s.nd continues to participate In the Pro-
(i) a copy of the Admi,~;-~tr~tor's final
determ~--~tion. (e) Before the commencement of
(c) A flood elew~tion determination initial Flood L~.sur'a~ce Study, the
doclcet shall he estah ~lLshed and ns-~!m- CCO or other k-EM_~, relsresent~tive,
rained itl ~ccor~nnce wiMa Par+. 6T of together with a re~sresentattve of the
this subchapter, orsanizztton undertakinil the study,
[~1 FI~ 46988, Oct. ~-6, 19'I6. Red~icrmt~--d a~ shnll meet with officiaJ~ of the com-
44 ~1~ 3~1~?, M~F 31. 1979, and axnended a~ mur~ty. The state coordinatin¢ agency
48 L~R 44544 and ~4553, ~e~t. 19, 1983; 49 shP-ll be notified of this meetin~ and
FI~ t7~1, Feb. 8, 198~.1 may attend. At thi; .~..-etlng, the local
officials shall 'oormed of (1) The
§$6.1 Appointment ~f c~,.-.,.it~tion co- d,.2e -~'e. _.. -~tlldy' %-[11 commence,
ordination officer. (2) the nature a~.d purpose of the
The Aar~i~i_~tl-ator may appoint ~tl study, (3) ~reas involve~ (t) the
employee .of the Federal ~nergency manner in which the study shall be
· Managem~'-nt Agency, or other desig- undertaken, (5) the general principles
noted Federal employee, ~s the Con- to be applied, and (6) the intended use
sultation Coor~i~2tion Officer, for o! the data obtained. The
es2h community when an analysis is shall be Imlormed in %,-rating tl any of
undert~en to est. zbli~h or' to modify the six preceding ltem~ are or will be
flood elewations pttr~uant to a new ch~n~ed after this initial meetLng and
study or a restudy. When a CCO is ap- during the course of the ongoing
pointed by the Administrator, the re- study.
sponsibilitles for co~ultatl~ and co- - (f) The community shall be in-
or~t~tiom as set forth in § 66.5 shsll formed in writing of any intended
'be carried out by the CCO. The Ad- modification to .the comm,mlty's final
mt~l_~tr~tor shall advise the comm~mi- flood elevation deter~ina~ons or the
ty and the stzte coordinating agency, develol~ment of new elevations in addl-
fnwrtt'.'~g, of thi_~ appoinl~nent, tional areas of the com~ty as a
· resul~ of a new study or restudy. Such
[.4~ ~ 'F/~ J~.u. T, L98'.~ s.s amended ~'- 49 illlOrm~tioI1 to the ¢ommtw. it¥ will
~ t~ Feb. 8, 19841 elude the data set forth in
§ 66.5 Res'ponsil~ilities for consultation. (e) of this section- At the discretion of
~n-d coordinatior~ the ~lsief of the Natural and Techno-
~ logical Hs.z~ds Division in each
(a) tout. act sb~!! be made with ap- ~ Regional O[[icl, ~, meeting
propriate offictz!~ of a c0mmu~ity in. be held to accompUah this require-
which ~ proposed in;,estigatioz~ is u~- mont. ..
derC. a~en, and with the state coordi-
l~ttllg ai~ency. [4T ~ Tut, Jan. ?, 1982, a.s amended
Cb) L~cai dL~emt.~tion of the intent PIS. t'lSL Feb. 8, 19841
and nature of the investigation shall
.. be encouraged ao t~b~_t interested .par- PART 67--APPI~ALS FROM PRQ-
ties will have an opl~ortunity to brin~ POSED FLOOD ELEVATION- DE-
relevant cl~ta to the a~tentton of the: TERAtiNATIONS
comm,.~nity and to the Ad~i~i_~trator.
(c) Submt~-~ton of information from Se~
the comr-.-illllty co:lcer:liI~ the sl;udy 67.1 Purpose of
shall he encouraged. 6~.2 DefInlttoms.
36i