Reclamation issues snowmelt forecast for Bighorn River Basin

Media Contact: Tyler Johnson, 406-247-7609, tjohnson@usbr.gov

For Release: June 07, 2019

BILLINGS, Montana – Reclamation's June forecast of the April through July runoff predicted for the Bighorn Basin is as follows:

  • Bighorn Lake - Bighorn River April through July inflow to Bighorn Lake is forecast to be approximately 1,517,600 acre-feet (af), which is 124% of the 30-year average of 1,221,200 af. Approximately 540,100 af of the forecast volume was accumulated during April and May, which is 114% of the April and May average.
  • Buffalo Bill Reservoir - Shoshone River April through July inflow to Buffalo Bill Reservoir is forecast at 850,000 af, which is 116% of the 30-year average of 734,600 af. Approximately 213,000 af of the forecast volume was accumulated during April and May, which is 91% of the April and May average.
  • Boysen Reservoir - Wind River April through July inflow to Boysen Reservoir is forecast at 775,000 af, which is 128% of the 30-year average of 603,300 af. Approximately 209,000 af of the forecast volume was accumulated during April and May, which is 112% of the April and May average.
  • Bull Lake Reservoir - April through July snowmelt runoff into Bull Lake Reservoir from Bull Lake Creek is expected to be 165,000 af, which is 115% of the 30-year average of 143,200 af. Approximately 27,100 af of the forecast volume was accumulated during April and May, which is 81% of the April and May average.
  • Wind River – April through July snowmelt runoff into the Wind River above Bull Lake Creek is expected to be 450,000 af, which is 103% of the 30-year average of 435,000 af. Approximately 103,600 af of the forecast volume was accumulated during April and May, which is 86% of the April and May average.

For additional information on Buffalo Bill, Boysen, and Bull Lake Reservoirs, contact Wyoming Area Manager Carlie Ronca at 307-261-5671. For additional information on Yellowtail

Reservoir, contact Montana Area Manager Steve Davies at 406-247-7298.

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Reclamation is the largest wholesale water supplier in the United States, and the nation's second largest producer of hydroelectric power. Its facilities also provide substantial flood control, recreation, and fish and wildlife benefits. Visit our website at https://www.usbr.gov and follow us on Twitter @USBR.

Relevant Link:

Wyoming Area Office