Note: This publication is currently undergoing major revisions. The current publication will be replaced with a new publication based on stakeholder requirements and scientific advances. We expect to begin sharing details on this soon. If you have input on content, format, or publication frequency at any time, please contact us at firstname.lastname@example.org.Green Water Supply Outlook, January 1, 2008
Water Supply forecasts vary over the Green River basin from below normal
values in the Upper Basin (points above Flaming Gorge) to near normal conditions in the other regions.
This follows water year 2007 where observed flows through out the basin were
below to much below average. However, it is still early in the snow
accumulation season and there is ample time for conditions to change.
*Median of forecasts within each basin.
Upper Green Basin Conditions
The Upper Green Basin stands out as having the lowest April through July Forecasts in the Colorado
River Basin at this time. Despite December's above average precipitation, snow pack remains below average.
After 5 years of below average flows, soils are very dry and influenced a lower forecast.
This soil moisture deficit will persist through the forecast season.
While climate forecasts indicate the chance for above average precipitation over the
northern portion of the basin, this has yet to materialize.
Snow pack in the Uinta Basin varies greatly. While some lower elevation stations
are reporting near average snow water equivalent conditions, upper elevation sites remain below average. December's monthly
precipitation was above average partly due to very high amounts at low elevations station that do not
normally recieve significant precipitation. Meteorological models indicate the western portion of the basin will receive significant
precipitation the second weekend of January that will improve the snow pack in the short term.
As in the Duchesne Basin, large amounts of precipitation at lower elevation gages pushed the monthly
totals near 200 percent of average. Runoff in the Lower Green Basin, points in the Price and San Rafael drainages, is expected to be near average.
Some snow sites in the along the Wasatch Plateau are above average as a result of favorable
storm direction during events in early December. Slightly to the east, stations
report near average conditions. As in the Western Uinta Basin, there exists the
potential for significant accumulation with the storms arriving in early January.