FLOOD01761

• Designation Number: 83
• County: Larimer
• Community: Unincorporated Larimer County
• Stream Name: Big Thompson River
• Title: Floodplain Information Report - Big Thompson River, Loveland to the Larimer-Weld County Line, CO, and the Little Thompson River, Boulder and Larimer Counties, CO
• Date: 6/1/1977
• Designation Date: 11/1/1977
• Floodplain - Doc Type: Floodplain Report/Masterplan

Table 8 (continued)
Flood Plain Reference Oatil
Little Thomp~on River
Boulder and Larimer Counties ~ear Barthoud, Colorado
'I 50-Year I DO-Year
Stroa,.,.... IO-Year 500-Year
R"ference Oi$t,~nce em" fl=d flood Flood "000
Point '" Elevation Elevation Elevation Elevation Elevation
Identification N~,"ber feet rt . -~~. 5 . l . Ft.-M.S.l:.,- Ft.41.S.L. Ft.~'.1.S.L. Ft. -(~.S ._1:.:..
C~o~~ Section 4-4 80 94,560 490>6.5 4962.4 4964.2 4965.8 49&8.0
" 93,650 ~95,.O 4959.8 4962.7 4965.3 496i'.4
"" 93,420 495.1.0 4959.7 4962.4 4905.0 4967.1
County Road e2 93,400 4952.8 UIS 4959.6 UIS 4962.3 U/S 4964.9 ulS 4967.0
O/C 4958.7 O/s 4960.9 O/C 4961.8 O/S 4963.9
" 92,520 4950.5 4956.9 4959.0 4960.1 4%~' .8
Oryereek "'" 92,070 4949.0 4955.4 4957.2 4958.2 4%2.3
"' 9!,850 4<148.0 4954.6 4956.4 4957.2 4961.9
. e; 91,180 4945.5 4952.5 4954.7 4955.5 4961.6
86 90.550 4943.~ 4951.9 4'154.5 4955.2 4961.6
87 89,900 4943.0 4951.3 4954.1 4954.8 4961.4
" fl9.560 4942.0 4950.7 4953.9 4954.6 4961.4
Countyf1O<ld 87 89,520 4941.0 U/54950.9 UIS 4953.9 U/54954.4 U/54961.3
0/54"50.2 0/5 4953.5 0/54954.2 0/54961.3
Col"rf.<l.-, , " 89,385 4940.4 UIS 4950.1 1)/54953.4 UIS 4954.1 U/54961.3
Southern Rail"ay O/S 4950.0 O/C O/S 49~3.9
>1953.3 O/S 4957.6
County Road " 89.29~ 4940.0 0/54948.9 "/C 4953.2 U/54955.4 UIS 495(,.3
D/54948.4 O/S 4950.6 0/54951.6 O/S 49~~ .3
!J lo"...ater"levationasdetermingd b'l"erial "hotOQratronetrlcmethods.

Table 8 (con-tlnued)
Flood Plain Reference Data
little Thompson River
Boulder and Larimer Counties Near 8erthoud, Colorado

5tr""."i.! 10-Year 50-Year lOO-Year 50Q-YeM
Roferenc.. Distance "" fl=d Flood Flood Flood
Point '" Elevation Elevation Elevation Elevation Elevation
Identiflcatlon fj,,,"ber Foet Ft. -I~ . S. L. Ft . -~l. 5. L. Ft.-I4.5.L. Ft.-I4.S.L. Ft.-M.5.L.
n 88,890 4939.0 4946.7 4948.3 4949.0 4950.7
93 88.150 49,~fi. '> 4944.2 4946.0 4947.0 4949.1
" B7,420 4934.5 4942.1 4944.3 4945.5 4946.6
" 86,600 4932.0 4938.2 4940.0 4940.7 4944.0
% 85,650 4929.0 4934.3 4936.2 4937.4 49~9.5
93 85.600 492"1.5 4934.2 4936.2 4937.4 4939.4
98 84.920 49:15.0 4933.1 4935.1 493fi.5 4938.3
County Road " 84,655 4925.0 UIS 4933.0 lJ/S 4935.0 UIS 4936.4 UIS >1938.2
. 0/5 4931.1 0/54934.1 0/5 4935.7 OIS 4937.4
N
00, B4,620 4924.9 4931.0 4934.0 4935.6 493L3
100 84,040 4923.0 4931.0 4933.1 4935.6 4937.3
'" 83,750 4921.2 4929.1 4931.1 4935.2 49,(,.6
102 83,100 4921.1 4929.0 4931.0 4935.2 493{,.6
'OS 83,i"l65 4921.0 U/54928.9 U/S4930.9 UIS 4935.2 U/S 49_~f, .6
!JIS 49-28.6 0/5 4930.5 0/5 4931.7 (l/5 4933.6
Downstream limif 104 83,030 4921.0 492fi.5 4930.4 4931.3 493?,.1
01 Study
IlariMer-i'/,Hd Count'l
Line)

"

Low water elevation as determined by aerial phot09ra~etric methods.