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 cbrfc.webmasters@noaa.gov.Green Water Supply Outlook, January 1, 2010Green Water Supply Outlook, January 1, 2010
Contents
Green Summary

*Median of forecasts within each basin.
Upper Green Basin Conditions
The following conditions influenced this month's forecasts:
Precipitation:
Seasonal October through December
precipitation was 75 percent of average
in the Upper Green basin. December
precipitation was 50 percent of average.
Snow:
January 1st snow water equivalent was near 55 percent of average in the basin
as a whole.
--- Upper Green basin
snow
water equivalent plot.
Streamflow:
December streamflow was near 95 percent of average.
Soil Moisture:
Modeled
soil
moisture states ranged from below average to near average heading into the winter.
Climate Forecasts:
Climate forecasts were not a factor because there is not a strong correlation
between El Nino conditions and winter precipitation in the Upper Green basin.
Forecast Summary:
Due to below average seasonal precipitation to date and much below average
January 1st snow water equivalent values the April through July streamflow
volume forecasts are below average at this time. These forecasts now range
between 65 and 78 percent of average, with a median value of 75 percent.

* Percent usable capacity, not percent average contents.
Click for multi-month Graph.
Yampa/White Basin Conditions
The following conditions influenced this month's forecasts:
Precipitation:
Seasonal October through December
precipitation was 95 percent of average
in the Yampa/White basin. December
precipitation was 110 percent of average.
Snow:
January 1st snow water equivalent was 80 percent of average in the basin
as a whole.
--- Yampa basin
snow
water equivalent plot.
Streamflow:
December streamflow was near 90 percent of average.
Soil Moisture:
Modeled
soil
moisture states were near average heading into the winter for the Little Snake
and White River basins. Modeled states ranged from below average to near average
heading into winter for the Yampa basin.
Climate Forecasts:
Climate forecasts were not a factor because there is not a strong correlation
between El Nino conditions and winter precipitation in the Yampa/White basin.
Forecast Summary:
Due to near average seasonal precipitation to date and below average
January 1st snow water equivalent values the April through July streamflow
volume forecasts are below average at this time. These forecasts now range
between 76 and 86 percent of average, with a median value of 85 percent.

* Percent usable capacity, not percent average contents.
Click for multi-month Graph.
Duchesne Basin Conditions
The following conditions influenced this month's forecasts:
Precipitation:
Seasonal October through December
precipitation was 65 percent of average
in the Duchesne basin. December
precipitation was 100 percent of average.
Snow:
January 1st snow water equivalent was 70 percent of average in the basin
as a whole.
--- Duchesne basin
snow
water equivalent plot.
Streamflow:
December streamflow was 105 percent of average.
Soil Moisture:
Modeled
soil
moisture states were much below average to below average heading into the winter.
Climate Forecasts:
Climate forecasts were not a factor because there is not a strong correlation
between El Nino conditions and winter precipitation in the Duchesne basin.
Forecast Summary:
Due to much below average seasonal precipitation to date and below average
January 1st snow water equivalent values the April through July streamflow
volume forecasts are below average at this time. These forecasts now range
between 55 and 81 percent of average, with a median value of 75 percent.

* Percent usable capacity, not percent average contents.
Click for multi-month Graph.
Lower Green Basin Conditions
The following conditions influenced this month's forecasts:
Precipitation:
Seasonal October through December
precipitation was 90 percent of average
in the Lower Green basin. December
precipitation was 165 percent of average.
Snow:
January 1st snow water equivalent was 85 percent of average in the basin
as a whole.
--- Price basin
snow
water equivalent plot.
Streamflow:
December streamflow was near 90 percent of average.
Soil Moisture:
Modeled
soil
moisture states were much below average heading into the winter.
Climate Forecasts:
Climate forecasts were not a factor because there is not a strong correlation
between El Nino conditions and winter precipitation in the Lower Green basin.
Forecast Summary:
Due to near average seasonal precipitation to date and below average
January 1st snow water equivalent values the April through July streamflow
volume forecasts are below average at this time. These forecasts now range
between 73 and 84 percent of average, with a median value of 80 percent.

* Percent usable capacity, not percent average contents.
Click for multi-month Graph.
Differences between the full period forecasts and the residual forecasts may not exactly equal the actual observed volumes due to rounding conventions (see Definitions section).
Reservoir Monthly Inflow Forecasts


Monthly Streamflows



Precipitation Maps


Hydrologist: William Reed