FLOOD01663

• County: Moffat
• Community: Craig, Moffat County
• Stream Name: Yampa River
• Title: Flood Hazard Information
• Date: 9/30/1987
• Prepared For: Craig, Moffat County
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Floodplain Report/Masterplan

of vegetation is less than in the higher for this report. These flood events on the I I TABLE 3 (Continued)
elevation areas of Fortification Creek and the Yampa River would result from snowmelt. On
Yampa River. Fortification Creek and the tributary gulches. I I Cross Peak Flow (Cubic Feet per Second) I Stage (Feet)
Peak flows thus developed for the 100- and the 5O.year flood would result from cloud- Section 10- Year Flood 50-Year Flood 100-Year Flood SOO-Year Flood
500-year floods (together with corresponding bursts, and the 10-year flood would result Location Flow Stage Flow Stage Flow Stage Flow Stage
water surface elevations) at each cross section from snowmelt. With the exception of showing I I
used in the hydraulic analyses made for this their flows and water surface elevations in YAMPA RIVER (Continued)
study are shown in Table 3. Information on 10- Table 3 and their profiles on Plates 2S-44, the
and 50-,'ear flood events was also developed in 10- and 50-year floods are not covered further I I 140,76 12.000 6174.6 15,800 6175.S IS,300 6176,5 29,000 6179.1
conjunction with the hydrologic studies made in this report, 140,93 12,000 6175,3 15,800 6176.4 18,300 617 7.1 29,000 6179,6
TABLE 3 141.06 11 ,800 6175,8 14,900 6176.S 17,000 6177.5 27.000 6180,0
141.24 11.800 6177,5 14,900 6178,3 17,000 6178,8 27.000 6181.0
PEAK FLOWS AND STAGES I I 141.41 11.800 6179.4 14,900 6180,0 17,000 6180.4 27.000 6182,2
10-,50-,100-, and 500-Year Floods 141.53 11.800 6179,9 14,900 6180,5 17,000 6180,9 27.000 6182:8
141.62 11.800 6180,2 14,900 6181.0 17,000 6181.4 27.000 6183,2
II I 141.77 11.800 6181.4 14,900 6182,1 17,000 6182,5 27,000 6184,4
Cross Peak Flow (Cubic Feet per Second)' I Stage (Feet)' 141.89 11.800 6182,1 14,900 6182,9 17,000 6183.4 27.000 6185.4
I 142.06 11.800 6182,9 14,900 6183,7 17,000 6184,2 27.000 6186,2
Se cti on 10-Year Flood 50-Year Flood 100-Year Flood 500-Year Flood
Location' Flow Stage Flow Stage Flow Stage Flow Stage .. I 142,27 11.800 6184,5 14,900 6185.4 17,000 6186,0 27.000 6188,0
142.64 11 ,800 6186,1 14,900 6186,8 17,000 6187.3 27,000 6189,0
YAMPA RIVER 142.81 11.800 6187.1 14,900 6187.8 17 ,000 6188,2 27,000 6189.9
(Drainage Area 1,873-2,150 Sq. Mi.)' I I 143.01 11 ,800 6189,8 14.900 6190.3 17 ,000 6190.7 27.000 6192.1
143,17 11.800 6190,8 14,900 6191.4 17 .000 6191.8 27,000 6193,4
138,39 12,000 6163,2 15,800 6164,3 18.300 6164,9 29,000 6167.3 143,31 11 ,800 6191.5 14,900 6192,2 17 .000 6192,6 27,000 6194,2
138,62 12.000 6163.4 15,800 6164.4 18.300 6165.1 29,000 6167,5 I I 143,95 11.800 6194,3 14.900 6194.9 17,000 6195,2 27.000 6196,6
138,83 12.000 6163.5 15,800 6164,6 18,300 6165,2 29,000 6167.6 144,11 11 ,800 6195,8 14.900 6196.2 17 ,000 6196,5 27,000 6197,9
139,01 12.000 6163.9 15,800 6165.0 18.300 6165.6 29,000 6167.9 144,52 11 ,800 6197,6 14.900 6198,2 17 .000 6198,5 27,000 6199.8
139.12 12,000 6164.2 15, SOO 6165,2 18,300 6165,8 29,000 6168.1 I I 144,67 11 ,800 6198,0 14.900 6198,6 17 ,000 6198,9 27,000 6200.3
139,32 12,000 6165,1 15,800 6166,1 18.300 6166,7 29,000 6168.9 144,92 11,800 6199.4 14,900 6200,0 17,000 6200.4 27,000 6201.8
139.42 12,000 6165.7 15,800 6166,8 18.300 6167.3 29,000 6169.6 144,99 11,800 6199,7 14,900 6200.3 17,000 6200,6 27,000 6202.1
139.45 12,000 6165,8 15,800 6166,8 18.300 6167,5 29.000 6169,8 ( I 145,08 11,800 6200,0 14,900 6200,6 17.000 6201.0 27,000 6202,5
139.47 12,000 6165,9 15,800 6167,0 18,300 6167,6 28,000 6170,0 145,18 11,800 6200,5 14,900 6201.2 17.000 6201.6 27.000 6203.4
139,54 12,000 6166.1 15.800 6167,2 18,300 6167,9 28,000 6170,3 145.27 11,800 6200,9 14,900 6201.6 17,000 6202.1 27.000 6203.9
139.67 12,000 6166,3 15,800 6167.4 18,300 6168,1 28.000 6170,6 145.36 11,800 6201.2 14,900 6201.9 17,000 6202.4 27.000 6204,1
I I
139.S2 12,000 616S,1 15,800 6169.1 18,300 6169,7 28,000 6171.9
139,92 12,000 6168.7 15,800 6169,6 18,300 6170.2 28,000 6172,2 FORTIFICATION CREEK
140,05 12,000 6169,6 15,800 6170.5 18,300 6171.0 28.000 6172,8 I I (Drainage Area 241-258 Sq. Mi.)
140,18 12,000 6171.5 15,800 6172.4 18,300 6172.9 28,000 6174.4
140,19 12,000 6171.6 15,800 6172,5 18,300 6173.0 26,500 6176.0 0 1,270 6175,8 2.100 6176,9 3,300 617S.6 4,200 6180.0
140,21 12,000 6171.6 15,800 6172,6 18,300 6173,1 26,500 6176.0 380 1,270 6175,7 2,100 6177.2 3,300 6178.8 4.200 6180.0
140,30 12,000 6172.4 15,800 6173.5 18,300 6174,2 29,000 6176.8 I I 550 1,270 6176,1 2,100 6177.4 3,300 6179,0 4,200 6180.1
140.46 12,000 6173,5 15,800 6174.7 18,300 6175,4 29,000 6178,1 990 1,270 6177.0 2.100 6178.4 3,300 6180,0 4,200 6181.0
140,62 12,000 6174,0 15,800 6175.2 18,300 6175,9 29,000 6178.6 1,220 1,270 6177.4 2,100 6178,8 3,300 6180.5 4,200 6181.5
1 Decreases in flow ,,'olume in a'downstream direction due to channel storage and overbank losses to sheet flow areas. I I 1.680 1,270 6178,1 2.100 6179.6 3,300 6181.4 4,600 6182.4
2 National Goodetie Vertic-al Datum. 1929 adjustment 1,990 1,270 6178,5 2.100 6180,1 3.300 6182,0 4,700 6183,2
3 Miles upstream from mouth on the Yampa Rh"er; feet upstream from mouth on Fortification Creek (Le.. Yampa River 2,325 1,270 6178,8 2,100 6180,3 3,300 6182,1 4,800 6183,3
anabranch channoel), Brotherton Gulch, and Cedar l\'Iountatn Gulch; and feet upstream from the upstream fa.ce of the I I 2,715 1,270 6180,0 2.100 6181.4 3,300 6182,9 4,800 6184,1
Highway 13/789 culvert on Pine Ridge Gulch.
4 At upstream and downstream limils of study area. 2,740 1,270 6180,4 2.100 6181.9 3,300 6183,6 4,800 6185.2
16 ( I 17
I I