March brought a mix of conditions to the Green River. The Upper portion of the basin had near average precipitation while the Yampa. Duchesne and Lower Green saw below average to well below average precipitation. Fortunately, temperatures were cool with daily maximums 3-7 Fahrenheit degrees below average and minimums 1 to 3 Fahrenheit degrees below average. This preserved much of the snowpack in the Yampa, Duchense and Lower Green basins where conditions are still above the April 1st average. In the Upper Basin, snowpack improved slightly from 90 percent on March first to 95 percent on April 1st.

Near average March precipitation brought the median basin forecast up to 85 percent in the Upper Green. However, dry soil conditions continue to influence the April through July Forecast in the Upper Green. While snowpack in near normal at many sites, modeled soil moisture is well below average with some regions in the 20 to 30 percent of the 30 year average. This accounts for the difference in the snow observations and the April through July runoff forecast.

March precipitation was only 70 percent average. Basin wide, snowpack remained 110 percent on April 1st. Key stations in portions of the Sierra Madre and Park Range increased snowpack. As a result, model guidance increased for some points and the median basin forecast is 125 percent. This increase is seen on the Elk River and Elkhead Creek, which are expected to see April through July volumes that are much above average.

Below average precipitation in March led to a reduction in forecasted volumes for points in the Duchesne River Basin. Continued cool temperatures and the potential for additional storms to impact the area during the first portion of April should keep runoff volumes near average to slightly above average.

The Lower Green Basin had the least March precipitation in the region. Snowpack dropped 15% from the March 1st but is still 120% of the April 1st average. Runoff volumes are anticipated to be near average.

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).