Laserfiche WebLink
<br /> " <br /> , <br /> ., <br />e Major rainfloods generally occur in the later summer or fall seasons and are caused by <br /> " <br /> i general rainstorms. Local thunderstorms can also occur, but these rains generally produce <br /> , <br /> localized flooding in the larger basins and major floods only in the smaller basins along desert <br /> foothills. The highest flows on Lost Canyon Creek are caused by cloudburst-type storms. A <br /> general rainstorm during the snowmelt season (April-June) could produce a peak flow higher than <br /> that from snowmelt alone, if higher air temperatures accompanied the rainstorm. Table 5 shows <br /> all ofthe observed peaks above 5,000 cfs at the Dolores River at Dolores gage, the range of flow <br /> :: that causes flooding in and upstream ofthe city of Dolores. (See Section 8.2 for a discussion of <br /> II annual peak flow records and frequency curves for Dolores River at Dolores, Dolores River <br /> below Rico, and Lost Canyon Creek near Dolores, Colorado streamflow gages.) <br /> Table 5 <br /> Observed Peaks above 5,000 cfs <br />e, Dolores River at Dolores Gage <br />Date Flow (cfs) Type <br /> 5-0ct-ll 10,000 E Rain <br /> 19-Jun-49 8,140 Rain on snow <br /> ,I II-May-41 8,070 Snowmelt <br /> 4-May-22 7,340 Snowmelt <br /> 28-Jun-27 7,030 Rain on snow <br /> 6-Jun-57 6,690 Snowmelt <br /> 25-May-84 6,450 Snowmelt <br /> 18-May-83 6,070 Snowmelt <br /> 20-May-73 5,750 Snowmelt <br /> 16-May-44 5,670 Snowmelt <br /> 19-5ep-25 5,600 Rain <br /> 28-May-93 5,500 Snowmelt <br /> 4-May-52 5,440 Snowmelt <br /> 17-Jun-95 5,340 Snowmelt <br /> 25-May-26 5,220 Snowmelt <br /> 6-Sep- 70 5,190 Rain <br /> 25-Apr-38 5,090 Snowmelt <br /> 20-May-48 5,040 Snowmelt <br /> , Source: WY 1912, 1925-77 (See Reference 4-i) <br /> 1 WY 1978-2003 (USGS) <br />e <br /> " <br /> 13 <br /> i <br />