06-07-17 NRCS: Colorado Basin Outlook Report for June 1st Available Now

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NRCS: Colorado Basin Outlook Report for June 1st Available Now

Summary: As of May 1st, statewide water year-to-date precipitation was still at 108 percent of normal despite the prior two months having received below average precipitation. However, snowpack was decreasing earlier and faster than normal throughout substantial parts of March and April, causing some early concern regarding Colorado’s summer water supply situation. Fortunately, May precipitation made a solid turnaround from the previous months. Temperatures were cold as several storms rolled in to provide additional snow to the higher elevations of many mountain ranges in Colorado. The greatest accumulations were seen along the Front Range where several feet of snow fell in one mid-May storm. Statewide May precipitation totaled 135 percent of average, with the South Platte and Arkansas River basins receiving notably more than any other basins. By the end of May, statewide water year-to-date precipitation increased to 111 percent of average. Snowpack had begun an early melt in March but the storms that came through were cold, which helped keep a relatively good snowpack in place. As of the first of June, snowpack is running off at normal rates or slightly later than normal. In reservoirs across the state, storage totals remain above normal at 109 percent of average. Altogether, above normal snowpack, precipitation, and reservoirs on June 1st are positive indicators of good water supply for Colorado going into the early summer months.

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