Hydrologic Outlook
Issued by NWS Denver/Boulder, CO
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000 FGUS75 KBOU 112053 ESFBOU COC001-005-013-014-019-031-035-039-047-049-057-059-069-073-075-087- 093-095-115-117-121-123-250000- Water Supply Outlook National Weather Service Denver/Boulder CO 153 PM MST Thu Jan 11 2018 ...Water Supply Outlook for north central and northeast Colorado as of January 2018... Below normal mountain snowpack continues. The northern mountains of Colorado hold substantially more snow than those in the southern half of Colorado. On January 1st the South Platte sub-basin snowpack ranged from 67 percent of normal in the Saint Vrain basin to 100 percent of normal in the Cache la Poudre basin. The upper Colorado River sub-basin snowpack ranged from 64 percent of normal for Williams Fork to 89 percent of normal in the Muddy Creek basin. The January 1st snowpack was 81 percent of normal in the North Platte basin and 118 percent of normal in the Laramie basin flowing north into Wyoming. As of January 11th, the snowpack ranged from 83 percent of normal for the South Platte basin to 72 percent of normal in the upper Colorado River basin. Water supply remained in good shape. Reservoir storage volumes continued holding above average. Combined reservoir storage on January 1st was 113 and 114 percent of average in the upper Colorado and South Platte basins, respectively. However, temperatures for the water year have generally been above normal, contributing to the impacts of below normal precipitation. This left volume forecasts this spring and summer generally below to slightly below average. Median Forecast Volume Percent Stream and Station Period 1000 AF of Avg __________________ ______ _______ _______ South Platte River Antero Reservoir inflow Apr-Sep 15 91 Spinney Mtn Res inflow Apr-Sep 40 68 11-Mile Canyon Res inflow Apr-Sep 42 65 Cheesman Lake inflow Apr-Sep 80 65 South Platte Apr-Sep 145 69 Bear Creek Morrison Apr-Sep 11 56 Clear Creek Golden Apr-Sep 79 71 Saint Vrain Creek Lyons Apr-Sep 80 83 Boulder Creek Orodell Apr-Sep 45 83 South Boulder Creek Eldorado Springs Apr-Sep 30 79 Cache La Poudre River Canyon Mouth Apr-Sep 168 82 North Platte River Northgate Apr-Sep 212 93 Colorado River Granby Apr-Jul 180 82 Willow Creek Willow Creek Res Apr-Jul 43 91 Fraser River Winter Park Apr-Jul 18 93 Williams Fork River Williams Fork Reservoir Apr-Jul 83 86 Blue River Dillon Res Apr-Jul 141 87 Green Mtn Res Apr-Jul 230 84 Muddy Creek Wolford Mtn Res Blw Apr-Jul 36 67 Colorado River Kremmling Apr-Jul 705 82 These forecasts reflect natural flow only. Actual observed flow will likely be affected by upstream water management. Additional supportive information - Visit the Missouri Basin RFC information webpage for water supply forecasts east of the divide at weather.gov/mbrfc/water. - Visit the Colorado Basin RFC for water supply forecasts west of the divide at cbrfc.noaa.gov/lmap/lmap.php?interface=wsup. - Visit our website at weather.gov/bou for additional local weather...climate and stream information. - Long range precipitation and temperature outlooks are available at www.cpc.ncep.noaa.gov/products/predictions/. - Snowpack and reservoir data are available from the Natural Resources Conservation Service at www.wcc.nrcs.usda.gov/snow/. $$ tlh

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Page last modified: 11-Jan-2018 8:53 PM
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