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B ELEVATION REfERENCE MARKS REfERENCE ELEVATION MARK (fEET NGVDl DESCRIPTION Of lOCATION RM20 5395.00 A U.S. Geodetic Survey designation marked K-321 located at the North Broadway Grade School, 0.75 mile north along State Highway 7 from the first National Bank at Boulder, 115 feet east of the centerline of the highway, set vertically in the west brick wall of the school building, 16 feet north of the southwest corner of the building, 24 feet south of the center of the west entrance to the bui Iding, and 1.9 feet above the ground. 1 RM21 5343.09 A U.S. Geodetic Survey designation ma r ked J 32 1 set i nth e top 0 f the northwest end of the concrete gage gate of an irrigation canal, located at Boulder, 0.1 mile south of the junction of State Highways 7 and 93, 0.1 mi I e south of the Colorado and Southern Railroad Station, 40 feet east of the northeast corner of a concrete bridge over Middle Boulder Creek, and 70 feet northeast of the centerline of State Highway 7. RM47 5383.41 A standard di sk stamped "G 321 RESET 1955" and set in the top of a concrete post projecting 4 inches above ground, I ocat ed 0.7 mi Ie southeast along State Highway 93 from the University Intermediate School at Boulder, near the intersect ion of Twenty-fourth Street, Basel ine Road, and the Boulder and Denver Turnpike, 75 feet north of a fence parallel ing the turnpike, and 25 feet east of a fence parol lei ing Twenty-fourth Street. 2 RM48 5500.06 A U.S. Geodetic Survey designation marked Z 321 set in the top of a con ere t e po s t wh i c h pro j e c t sO. 8 foot above the ground, located 2.25 mi les north along State Highway 7 from the First National Bank at Boulder, 35 feet east of the centerl ine of the highway, 33 feet south of the centerl ine of Sumac Avenue, and 4 feet south of a witness post. 3 4 5 6 105018'Ll5" 40003'45" ~ ~ 17_ - fPiNEBROOK RD -->% O>~ 1> o en 0? o ....J UJ Z ct (/) z 6 -, ~ ~ 2g <.0 o <.0 LD .......~ ~:o LD 6S?>~ <Q-' <J}f!2 ff:] ~ ~//. LlOoOO'OO" "- \ ......, 10501845" [5 If i::::: 11 A ~ { S I 00', tz-. ~ _liNDEN -~ ~ <9;9, 00 :f' ( BOULDER COUNTY UNINCORPORATED AREAS 080023 ssg?> 590 ,,>- So 8? 14 HIGH VIEW__ LANE <-<7. /V0' ZONE X 23 SIJAI0' v0NINE 26 Boulder Creek CANYONSIDE DRIVE ~ gs ~ LD "t "'t LD LD LD 5554 550 46 (~st'>.~ 'J ~ ff5 co;t <.0 ,.... l.[) ~ tgLD LD CANYON DRIVE 35 x Y- " <.0 co ~ l.() ZONE AE I E F JOINS PANEL 0385 ~~ <) / :; .~. 5635 1'/ ~Z~:E ~ ~\ I LEE HILL :~'.i~ZONE X 5Y AJ r:::: R a:: a:: i.2 ZONE ;; iii< X :;;: ~ ~ !f) 0 C3 jlJ .... <t> ~0:> ffi ~ ~<) ~ YARMOUTH I:i' <:? ~ IIfiJLEMON ST- ~ A~~O ZONE X(0 ~,7nlll:: AE AVOCADO ~ <( ,......." ...... I Rp" ,7nN~ X \..."-. ( ) - ..... ",- DRIVE ~ 0~ 0<) @ X/ 12 0\J B ZONE AE I ZONE X Fourmile Canyon Creek - 0~ ~ 0~ "'i1to Qf' l' 7 8 l- I lH I- 0: ~ l- (/) ZONE X ~ ;})3 AVENUE YARMOUTH AVENUE ~-- ZONE X I- UJ UJ 0: l- (/) BOULDER COUNTY ~ UNINCORPORATED AREAS 080023 _J C1 J ---< ~c. ~ <9( (/; 0~ 'f'<9f'~~ Qf' J- ON AO~-- 5461/(DEPTH 1) \ VIOLET AVENUE 9 4e tn VINE ~ (_(:,,'0 b 0 PLACE"'-.. 'J (:"S n. ~ t>- z - ~ b 1\0:.1(\ .."... ('l TAMARACK- Sj)( ~y ('l AVE S(:"(:,,t<1 ZONE ~ SUMAC (DEP~TH r:\AjE tn N .)., 5417 ,\ -\- J/~ 5425 \ 5j16 .......i~.ji..>~ ...... \ 0'~ " ~0'0'J' ~Gi - .. CITY OF BOULDER 080024 GUANA PLACE I I- <.0 ('l ~\ If C ROAD I , ZONE Urmize Y_{ Canyon I ZONE X Creek - - C;; -j ZONE X BOULDER COUNTY UNIN;CORPORATED AREAS 080~ ZONE AO l ~(DEPTH 1) LOCUST~ LOCUST \\ I" '" AVENUE PLACE r~1 ~ ~ ~ UNION AVEL...::l L.I ~ \"-~6TH ST 9TH STREET~n ~J ~ UllCA AVE ",,-.....t LJ UTICA L- H~A^p.^r?504' C ,'C~TAGE AVE J~ ZOI X - >- 2; 5506 tg ~Q I. ~ \ ~ , .z9 Y.L.'; F"""'- \'9: ~ } -?&~ ,y lH ZONE X r:: > 5456 (/) a'- 5455 ~I (;) 5453 SUMAC 5450 AMBER STREET \ 5386 53915389 5379 ~ \\\) I , .... l~~ - I 13 - co "t "t 5431 txrtro - ZONE X EMERALD RD 5414 5406 - ~ ~ ~ QUINCE CIRCLE .;::.Co 5504 ~ ~~ REDWOOD AVE X ~ RIVERSIDE AVE (~(.\ vJx ~C? QUINCE AVENUE J)~ V, \0 L ~ i" I POPLAR" GARNE POPLAR Al~ QUINCt-~~ ~onderland ~ AVE ~~ ~:~ ~ AVENUE ~ Creek tn li:! ~ A BOULDER COUNTY ORCHARD tn AVE 1\ ,\~"'o clVU ('" UNINCORPORATED AREAS 20TH / POPLAR I- 0\$, $\\'\ OAKDALE ~ 080023, t:3 ~ STREET AVE (/) cP PLACE S :5 OAK (:::: o ~ AVENUE O~ C3 ~ O~ 0<(-.^'- ORANGE 0: ,........ <c CO PLACE ill ___ 0 ZONE X NORWOOD \. 5348 ZONE X 5335 --NOR~HBROOK"" _ 5342 7~DRIVE- ZONE AE 5347 - ~~Oh~TEREY LOMA PLACE f;:; ~PASEO ZONE X o "DEL PARDO 3?>\) Wonderland Creek ~ 3~'<6 ZONE AE KALMIA ZONE X ,5317 ZONE X 5322 ~ 5320 <:: ~ 5318 V)0:1 <dG~ LIMIT OF DETAILED STUDY n / \J 10 AGATE ROAD 5398 5394 f:8 0)5 537 373 ZONE 536~~ ~ ~ tn ( t ~~) ) ~ ~ - V) CORPORATE LIMITS ........ - ~ ;::;"< o 0;9, Q0' \ (~) 5400 5397 5390 I Q. t:i ZONE AE N ~ ""~ ~~ ZONE A /Vo <::'.-v )~ / w E5 ) ~( ~\ ZONE X \;;! \ ;^KEBRIAR ~ V DRIVE --- \ {620 ,~ _~' LINDEN WONDERLAND PARK HILL DRIVE AVE & 0 <Jf Maxwell 0~' Lake ~S<r) ~ LINDEN I $' ~0:>() () ..... <) <rCY ! /~ONE X f:,'o<t> I KALMIA iD / CfJ AVENUE ZONE X ~490'J~~~, LIMIT OF eV ZONE jAE'o::O Ii> ~ ZO:E :0\0 DWAY 1.1.. JUNIPER\ 5470 i AVENUE / lTIH Twomile S4~ 5445 ST Canyon Creek IRIS AVENUE 5303 -10 "10 " ......1" I A~?Jj NORWOOD AVE \ (ij5037d 5363 5358 AVENUE ~ -, / I I ..../ / M 535 ~.-/ ~ ~LER II ./'" r /1 (,,3S6 O <C \\\...'t:.fA.X:- DR.IVE LANE ! ~ / I 'J 7 c\...O\jt:.;) NEHER - .~BIRCHWOOD 5354 ~ ~ -~ I I DRIVE ----: LOMBARDY DR?f:IVE ~ rr-::-::: BOULDER COUNTY WINDING 1: MEADOW/~INCORPOR.c~TED AREAS ~ X TRAIL.o.J<;1. AVENUE tuw / / AVENUE t/) LIMIT OF 080023 ~ L ...!LACE z DETAILED STUDY,,- I p. ZONE tJ ~ ~o:::J 0:(/),- I 1 I- / ( ~ ~ KALMIA - --- ~ '-' r I ~ ~ .?~ _______ ~ AVENUq AH 5344 I --J I 0>() 5334 I Fi333 21\1- 0:.) I 1 LINDEN S V~ <C ex: ::J"f ........ c.3~1 Ij AVENUE J' ZONE 0 g I 'J 11\-" X ~I- U ~ ~.: . I CITY OF BOULDER ~ .) r-l If: 080024 KEYSTONE ~ 5332 ~ " ., - JORDEN COURT ~SPER 5330 ZONE X I PLACE 0: I CT Foot- 5329 l I JONATHAN g: tJ bridf!e ::,rV ~ t:i ~ L- ..--J PLACE ~I JUNIPERI@7AVE/\321KALMIA.//I' ,.--,'~ I- ..... / ';>' (f) ~ IRIS AVENUE 326 COURT....,,- Elmers ~ 5320 20" r ZONE X TwomiZe ~ ~ &J.. ZONE AELONGMONT IRIS t:i DIAGONAL Creek,./ ZONE 531 5317 ~ HIGHWAY AVENUE \ .., ~ ~ BOULDER COUNTY ~ X 5317 316 UNINCORPORATED AREAS CORONA AlV( HAWTHORN AVE 5315 080023 TRAIOL I\;(;~/ ZONE X ~GLENWOOD DRIVE t/) I 311 GLENWOOD GLENWOOD \ ~ ZONE X E - COURT DRIVE ~ \ ONEAL 7 1 FOREST AVENUE - \'-' 5308 /'FALCON ~ (ARKWAY j ,JG0 Ii l i;; ~ ~ i;; <) 5303 WA'i J: ZO~E & I \~~'% :;; '- 1" Ii'<< C ~I T7 g A 'D;y 0')- I ~ ZONE X b) EA~ 6330 0 ~ 530953051l B ZON'EAYX tO~E / I 5299 \ (,'\ c'\\)s c~ I I- g? o -~() ~ S:o~ <( 0 0 0'" ~ Y Y ~'7 ~ o o 0: ill ~ o 't ~ z ~ ~ LIMIT OF to DETAILED STUDY 5610 AVENUE o S~C8 G SS9) 5570 )J o UJ u " KINGWOOD PLACE BOULDER -VIEW LANE ZONE AO (DEPTH 1) I Farmers Ditch IRIS AVENUE w I ~ .-s-:~ /24\ ~~ ~ 0;9, of '/V ~ GRAPE GRAPE '4 lANE i ,.- FOREST IIZ0NE AE tu ~-1 <:)~<v ZON1.JL19 ~ 1 HERMOSA <:) (/) I gs ~ HAWTHORN ZONE X AVENUE I--- I UJ I- UJ ~ g: (/) ZONE ~ GRAPE REPLIER t\'0 I DRIVE 0;) V 5360 5430J 5410 HAWTHORN AVENUE ZONE X WASHINGTON !41:;;: STREET o z <C 0 ~ I i2 ill W I ll.. ~ 6tn ~ j I I GRAPE AVENUE ZONE AOL (DEPTH 1) AVE I ~l 8 ~ 0: 0: I- l- (/) (f) EVERGREEN ..~ :ELLW:OD ~ '( tslt:5 (/) <( I =:i 0.: I- u:J AVE ~ 70NI-, .....-.'" X w ~ ~ (~~ \/'1' ~ o-.J LD r I, \~. .__' ~.... ~, . ) Goose ~ ~ .Creek m --""" ~ ~.. ~ZONE ~u \f\ I 1"~\ ~.'~ ,", . . ul'l'-....----' ~. .~-~ ~~. ~-_. _"I\Ch\".~ ~....,........_ , ;.,...~ -' _.-'::::. ~ ../ . A f ~H ~ -" - /;---< ", - '. ... 11 b"\'~. ~H !V \. / .'. . \. i " ," T . . \ . - . \.. . . . . . . . \ . .'. '. . '. . r · ,~ ;:r: '. . .. t ~ _ ~ _ __..", ARAPAHOE. AVENUE . ~. ^ . OVERfLOW PROFilE ~ASElINE . - _.. ~~. I CULVER .,' . :,,;" URT 29TH :x:: REET l-- I .' ! l-- UJ UJ 0: l-- (/) I- UJ ill ex: l- (/) I- ill UJ 0: l- (/) I- UJ UJ ex: l- (/) I- UJ UJ 0: l-- (/) f- W W 0: l- (/) I- W UJ 0: l- (/) 0' AVE l- (/) !;) ~ ~ ZONE X <rj I ELDER AVENUE DFI I wnnn. I- AVENUE\' (/) --;:---'- rl-lF~l NUT lH ~, '1st ,CE ~ ex: UJ I- 0: (/) AVE t/) t:i Co 531 ~ ~ l.[) l.[) ~ 5325 EDGEWOOD DR V_-.I BALSAM ,I(i:.\ DRIVE ~ ZONE X \;:J CJ -7 PANORAMA AVE ALPINE AVENUE Q., \)\?\\I't:. ~ ZONE X Q /s II r:: I- (/) g? I I- Q I >- co I I- <.0 I l- f'-.. I ?- m ZONE X NICH~)L-.... , STREET ~ ~ 21ST ~ ~ ('l ST LD l.[) LIMIT OF I DETAILED STUDY VALMONT ZONE Ao ROAD (DEPTH '1) \ AVE Goose Creek 0 RM20 '\ C~AR LIMIT OF DETAILED STUDY ~ AVE ~ I I- ~ co \') \') LD CEDAR \') "t <.o\') "t \') \> r} t::. BAL.SAM -- re 0; ~,I t; BALSAM 10) R: \') (\0:1 <r:;0:1 I I- $2 ZONE A ~~ AVE b LD \') LD AVE '\t . A. ZONE AE AVE <Jl ~t~ J~ ~ ALPINE ~ 1\ MESA AVENUE t? \ \. ~ TYLER ;:, ^-) ___ R~AD r SUNSET BOUL~ARD 1. ~ I STREET ~ B ~ 6 ALPINE LIMIT OF STUDY 5380 NORTH /f AVENUE! t:i t:i \ PORTLAND AVENUE J: i~1- ~ F~:,;;s tD AV~ 1 MA~ '!3. ?J S '!3. ~ ~ S-\\~,\:.t:\ LIMIT OF ~ETAILED STUDY;.' . ( . ~ o ... (/) ,.J. ZONE X 2.. ~ t:i t;; t:i / . MOUNT SANTAS-- ~ DRIVE ( I DAKOTA PLACE /' VALLEYVIEW/ DEWEY DRIVE ST ~ 5365 P~ \ ~ (Y) LD ~r;~ ."~ SUNSHINE CANYON ROAD ZONE A// ~ ,~ GLEN ROCK ~ . DRIVE """- I Sunshme WILLOW ~ Gulch GLEN COURT "< D BROOKSIDE "- K~~~~~oo~\1 DRIVE--=-""V ZONE A CONCOf3D MAXLELL 25 \-\\Gr\ --- ~ 5 30 /~. - S\~t:\:.\ Wltiterock ....-~~ nd --- ~ . (.~\ Boulder (i ~. 1- \'l~ J M \~ . ~ ' 1 f- CI) % o EJ z ~ ALT07 AVE I- ill ill 0: r- (/) I- UJ ill 0: l- (/) I- UJ UJ 0: l- (/) - --- ~ 5 (f) ~ ;...; C) ~ 5 I I--- f'-.. s\~'t:.t:\ '!3. ~ ~ AVE HIGHLAND '!3. ~ ~ I?\~'t:. ~ ZONE A I LIMIT OF DETAILED STUD I I- LO I I- <.0 <!J.(1 ~S @ :TH ST .,.. f'<?,\... ~ ;:g STUDY I?~ \ \') .-\ 5 0~ .,f\ (,0 l,~ :.-\ '1 \NfA.\...~'0\ MORRISON ALLEY LIMIT DETAILED (<) Ci\~'{O~ ~ SPRUCE BOULDER COUNTY STREET UNINCORPORATED AREAS 080023 r LIMIT OF BEACON DETAILED STUDy--::.OUR i - ~ Bg~~:V~~ 5~~~ ~~ (Y) LD S\ ~ ~ 5416 LIMIT OF DETAILED STUDY ~ -s.. S\ ~ S \~ Footbridge ~\O ~ \'& \ ~ ~ ~ ~--- ., GRANDVIEW \ AVE \ UNIVEkSITY AVENUE \ \ PI_EASl:";~UISTREET \ \1 ~~~T STREET PENNSYLVANIA PENNSYLVANIA AVJNUE 1\ AVENUE ~--..... ZONE X . ""- AVENUE ~~ W ~ tu ~ ill~l-~ ..lJ UJ UJ UJ UJ UJI ~ ~ ~ ~ A~NUE Ei ~ ).\ r~ AVE III ~ \ "f';;; AVENUE ~ ""- 5410 5406 - 0,<0 ~ 1/0 5 l~ ~ [KDEI>'N.,~ I PLA,CE ~ ~1 HAP~boD~ I ZONE ~~, GENEVA " ~ AVENU~ EU~L1D' LI\/J: ,III~.- ~ <:) ~ l.[) ( ( ROAD ATHEf\JS l- I ~~Ti}:~ "' ~zjL"~~.~U~~~WN. 5;~!f : LANE ~ ~~!; ~ I COLORADO AVENUE E' ~ UNI0E~SITY PENNSYLVA~ / 32 Zc;>,NE X "- HEIGHTS AVENUE E COLLEGE AVE ZO.NE AE",,~. o I~ KENT (E\ 5281) ~ I:AD:~~~tZfJ~~ ~ J~ ~ ~'9i: Si DENTON ^' i: ~ ~ I ZONE X j E ~ ~ K 5295 AVENUE--h.. ZONE AO I. 5298' I ......... _5300 (DEPTH 1) ZONE X5304 N ~~ Skunk Creek 29TH S 18TH IE Footbridge ZONE AE r-- CITY OF BOULDER 080024 31 36 CO! LEGE ZONE A I- UJ UJ 0: l- (/) UJ U <C .....I ~ ZONE X I- UJ UJ ex: f- (/) UJ U <C .....I ~ /~ FLAGSTAFF ROAD 1 I~ Bli:! l- t/) (/) vI- CLEVEI.AND ;:c ~ AVENUL ~ <3 UJ' CIRCLE^ 3 DRIVE 7 ,:::'1 ~ CHRISTMAS ~'- TREE f~ WILLOWBROOK DRIVE ROAD EUCLID ROSE HILL DRIVE 0- Gregory t:i Creek AURORA // ~ ~~~~ ~ ~ b; 0: li:! v- I- I- \ (/) J I I- I- g?(~ ZONE X Z ....J o U z =:i ZONE X ZONE X ZONE AO 1.<) -(DEPTH 1)- ~ E LlP.P., J\ \~)OD ~~lST 11\1, 'sf" ' Ul dge ~ .- ('[).; Inl\l ~rDl: :v ....vr: '~A[)= I- Z <C 0: CD ~ I ...... ~ I I- ~ I I- ~ I I- ;:2 I I- ;"!: I I- Q J//B I ?- m I I- ro I l- f'-.. I o 5341 5343 535 UJ W 0: l- (/) AVENUE DENVER BOULDER RAMP CASCADE I I- CD SS r=:: ~ cccc RM47 T1N\-...,- >7nNI= v. T1S",\,"-. ^' GREGOR Jj~NE E X BASELINE ROAD J .."... JOINS PANEL 0535 ZONE AE ZONE X 105015'00" Lloo03'Ll5" o - LO :;:;: o .....I ill Z <C ~ (/) z 6 -, ZONE AE 105015 00" L SPECIAL FLOOD HAZARD AREAS INUNDATED BY 100-YEAR FLOOD ZONE A No base flood elevations determined. ZONE AE Base flood elevations determined. ZONE AH Flood of of 1 to 3 base ZONE AO Flood depths of 1 to 3 feet [usually sheet flow on terrain); average depths determined, areas of alluvial fan flooding, velocities also determined. ZONE A99 To be Federal ZONE V Coastal flood with action); no base flood hazard (wave determined, ZONE VE Coastal flood with adion); base flood hazard (wave determined. FLOODWAY AREAS IN ZONE AE OTHER FLOOD AREAS ZONE X Areas of 500-year flood; areas of flood with depth, of less 1 foot or with areas less than 1 square mile; and protected by levees from 'IOO-year flood. OTH ER AREAS ZONE X Areas determined to be outside SOO-year floodplain. ZONE 0 Areas in which flood hazards are undetermined, UNDEVELOPED COASTAL BARRIERS ~ ~ '," ~,~"I Identified identified Otherwise 1983 1990 Protected Areas Coastal barrier areas are normally located within or adjacent to Special Flood Hazard Areas. Flood Boundary Floodway Boundary Zone D Bou.ndary Dividing Special Flood Zones, and Boundary i\reas of Different Flood Elevations Special Flood Hazard ~513~ @------@ Boundary Hazard Dividing Coastal Within Zones. Base Elevation Line; Elevation Feet. See Map Index for Elevation Datum. Cross Base Where See Map Elevation Line Elevation in Feet l.'1Iform Within Zone. for Elevation Datum, Mark (EL 987) RM7X . M2 River Mile Horizontal C.cordinates Based on North American Datum of 1927 (NI>'o 27) Projection 97007'30", 32022'30" NOTES This map is for use in administering the National Flood Insurance Program; it does not necessarily identify all areas subject to flooding, from local sources of small size, or all planimetric outside Special Hazard Areas. base flood elevations apply only landward of 0.0 NGVD, and include of wave action; these elevations may also differ from those developed by the National Weather Service for evacuation planning, Areas of Special Flood Hazard (100-year flood) include Zones A. AE, AH, AO, A99, V, and VE. Certain areas not in Special Flood Hazard Areas may be protected by flood control structures. Boundaries of the floodways were computed at cross sections and interpolated between cross sections. The floodways were based on considerations with regard to requirements of the Federal Management Agency. Floodway widths in some areas be too narrow to show to scale. Floodway widths are provided in Flood Insurance Study Report. This map may approximate boundaries of Coastal Barrier Resource System and .or Otherwise Protected Areas established under the Coastal Barrier Improvement Act of 1990 (PL. 101591), limits shown are current as of the date of this The user contact community officials to determine corporate limits have subsequent to the issuance of this map. For community revision history Section 6.0 of the Insurance to countyvvide mapping, Report. For adjoining map panels and base map source see separately printed Map Index. MAP REPOSITORY Refer to Repository Listing on Map Index EFFECTIVE DATE OF COUNTYWIDE FLOOD INSURANCE RATE MAP: JUNE 2, '1995 EFFECTIVE DATE(S) OF REVISION(S) TO IHIS PANEL: Refer to the FI.OOD INSURANCE RATE MAP EFFECTIVE DATE shown on this map to determine when actuarial rates apply to structures in zones Nhere elevations or depths have been established. To determine if flood insurance available, contact an insurance agent or call the National Flood Insurance Program at (800) 638,6620. . APPROXIMATE SCALE IN FEET n NATIONAL FLOOO INSURANCE PROGRAM I FLOOD INSURANCE MAP BOULDER COUNTY, COLORADO AND INCORPORATED AREAS PANEL 395 OF 595 PANELS NOT PRINTED) BOULDER COUNTY, UNINCOFiPORA TED BOULDER, CITY OF 080023 080024 MAP NUMBER 08013C0395 f EFFECTIVE DATE: JUNE 1995 Federal Emergency Management Agency