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WSP07324
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Last modified
7/29/2009 10:05:56 PM
Creation date
10/12/2006 2:15:48 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8210.137
Description
Colorado River Basin-Colorado River Basin Organizations/Entities-Colorado River Forecast Committee
State
UT
Date
3/1/1984
Author
NOAA
Title
Water Supply Outlook for Utah
Water Supply Pro - Doc Type
Report/Study
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<br />2 <br /> <br />SOUTHERN UTAH: The expected water supply for southern Utah continues to remain <br />above normal over most of the area. <br /> <br />Feb. precipitation over southern Utah was very erratic with the area from Fillmore <br />to Cedar City showing over 150% of normal. Amounts in the Virgin drainage basin <br />were below 20 percent of normal and Escalante reported no precipitation at all. <br />Seasonal amounts, October through February, are above normal over most of the <br />Sevier and Beaver Basins. The Virgin River Basin has slipped into the 50-75 <br />percent range. <br /> <br />Snow measurements on March 1 remain above normal over southern Utah with the <br />exception of the Virgin Basin: Upper Sevier-112%; Lower Sevier-168%; Beaver <br />-157%; and Virgin River Basin -74%. <br /> <br />Seasonal runoff continues at extreme levels with the flow on the Sevier River at <br />Hatch at 36,600 acre-feet - 206% Gf normal; inflow Sigurd to Gunnison 122,600 <br />acre-feet - 364%; Sevier River at Gunnison, 261,500 acre-feet - 407%; and the <br />Beaver River near Beaver, 9,900 acre-feet - 198%. <br /> <br />Reservoir storage in the Sevier Basin continues to be well above normal with the <br />combined contents of Otter Creek, Piute and Sevier Bridge reservoirs at 87% of <br />capacity and 163% of average for March 1. <br /> <br />Flood potential for this spring is high, particularly in the San Pitch and lower <br />Sevier basins where flood prone low lying areas are very susceptible. A cold, <br />wet spring will increase the flood potential, a dry spring with moderate <br />temperatures will reduce the threat of flooding. <br /> <br />EASTEP~ UTAH: Water supply remains well above normal despite the past two months <br />of below normal precipitation. Foreeasts range from 120% Ashley Creek to 212% <br />for inflow to Scofield Reservoir. Flood potential, for eastern Utah, varies but <br />is highest in the Huntington, Price, San Rafael, Strawberry, and lower Duchesne <br />drainages. <br /> <br />February precipitation was below normal, averaging 50 to 80%. Seasonally, October <br />through February, precipitation totals are well above normal, ranging 120 to 150% <br />of average. <br /> <br />Snow measurements on March I indicate well above normal snowpacks. Some basin <br />averages: Strawberry - 116%, Duchesne - 115%, Price - 139%, Huntington - 155% <br />and San R5fael - 164%. <br /> <br />Streamflows remained high through February. Flow on the Green River at Green <br />River, Utah was 212,000 acre-feet, 142% and at Whiterocks near Whiterocks, Utah <br />was 2,600 acre-feet, 200%. October through February flow on the Green River at <br />Green River, Utah wffil.30 million acre-feet, 205% of the 1961-80 average. <br /> <br />March 1, 1984 storage in Flaming Gorge Reservoir is 3.17 million acre-feet, 137% <br />of average and 84% of capacity. Lake Powell end-of-month storage is 21.5 million <br />acre-feet, 86% of capacity. The April-July inflow forecast to Lake Pewell is <br />ll.) million acre-feet, 151% of average. <br />
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