Flood Potential Outlook
Issued by NWS Denver/Boulder, CO

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FGUS75 KBOU 112053

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
- Snowpack and reservoir data are available from the Natural
Resources Conservation Service at www.wcc.nrcs.usda.gov/snow/.


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