FLOOD00155

• County: Boulder
• Community: Boulder County
• Stream Name: Upper Boulder Creek, Fourmile Creek
• Title: Floodplain Information Report
• Date: 12/1/1981
• Prepared For: Boulder County
• Prepared By: UDFCD
• Contract/PO #: &&
• Floodplain - Doc Type: Floodplain Report/Masterplan

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TABLE 4
PEAK DISCHARGE AND WATER SURFACE ELEVATION DATA
Upper Boulder Creek
Distance Stream!! 1Q-Year 50-Year 100-Year 500-Year
Re:ference From Bed Flood Peak Flood Peak 2 Flood Peak Flood Peak
Point Mouth Elevation Elevation DiSCharg~/ Elevation DiSCharge-! Elevation DiSCharg~ Elevation DisCharg~
Identification Number Ft. Ft.-m.s.I. Ft.-m.s.I. c.f.s. Ft.-m.s.1. c.t.s. Ft.-m.s.l. c.1'.s. Ft.-m.s.l. c.:f.s.
31 1968+75 7718.5 7720.9 350 7723.6 1530 7724.9 2300 7727.3 4710
32 1963+90 7708.1 7709.6 7711. 9 7713.0 7715.7
33 1959+20 7697.6 7700.6 7703.5 7704.7 7707.0
34 1954+50 7691. 3 7693.1 7695.3 7696.2 7698.4
35 1948+90 7672.7 7674.9 7677.5 7678.4 7680.3
36 1943+80 7665.7 7668.1 7669.8 7670.5 7672.2
37 1938+90 7657.3 7659.0 7661. 6 7662.8 7665.4
38 1933+50 7646.0 7648.8 7651. 5 7652.6 7655.1
39 1928+55 7637.7 7639.4 7642.1 7643.4 7645.9
40 1924+15 7627.2 7629.9 7632.7 7633.8 7636.5
41 1918+05 7613.5 7615.6 7618.5 7619.7 7622.3
42 1912+60 7601. 0 7603.4 7605.7 7606.4 7608.4
43 1907+45 7589.8 7591. 7 7594.7 7596.2 7599.6
45 1902+70 7580.2 7583.6 7586.9 7587.9 7590.0
46 1897+70 7573.0 7575.4 7577.8 7578.7 7581.2
47 1892+55 7562.8 7565.7 7568.7 7569.5 7571.3
48 1887+65 7556.5 7558.5 7559.9 7560.5 7562.0
49 1884+05 7550.7 7552.3 7554.3 7555.1 7556.6
50 1879+80 7544.5 7546.7 7548.3 7548.8 7549.8
51 1875+40 7538.5 7540.7 7542.6 7543.4 7545.2
52 1871+55 7532.1 75311.5 7537.2 7538.1 7539.9
53 1866+80 7526.1 7528.6 7530.5 7531.3 7533.6
54 1861+40 7516.0 7517.9 7520.4 7521. 5 7523.8
55 1856+50 7506.2 7509.2 7511.6 7512.5 7514.8
56 1851+10 7493.9 7495.9 7499.2 7500.6 7502.9
57 1845+65 7468.4 7471.4 7474.1 7475.1 7478.0
58 1839+90 7435.3 71138.5 7442.0 7443.2 7445.3
59 1835+50 7410.1 7411.7 7413.7 7414.7 7416.8
60 1830+10 7388.4 7390.4 7392.8 7393.8 7396.3
61 1824+30 7358.0 7360.1 7361. 8 7362.6 7364.2
62 1819+00 7320.4 7323.1 350 7325.9 1510 7327.0 2270 7329.6 4660
1/ Low water elevation as determined by aerial photogrammetric methods.
2/ Discharges are prorated between stations.

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