HIGHLIGHTS FOR THE MONTH
DAKOTAS AREA OFFICE
End-of-month elevation at Angostura Reservoir for the month of May was the second lowest in 55 years of record.
May end-of-month elevation at Shadehill Reservoir was the third lowest in 55 years of record.
End-of-month storage at Lake Tschida Reservoir was the ninth lowest content on record for the month of May.
EASTERN COLORADO AREA OFFICE
The Lake Granby storage of 369,000 acre-feet (AF) on May 31, 2007, was 3,100 AF below average and 23,600 AF lower than 1 year ago. Colorado-Big Thompson Project storage water in Lake Granby, Carter Lake, and Horsetooth Reservoir was 573,300 AF on May 31, 2007, 32,500 AF below average and 71 percent of the total available storage capacity.
Total water storage in the Fryingpan-Arkansas Project at the end of May 2007, was 502,900 AF, and 83,700 AF higher than 1 year ago.
MONTANA AREA OFFICE
End of May storage at Clark Canyon Reservoir was the tenth lowest on record and the end of May storage in Lake Elwell was the ninth highest on record.
NEBRASKA-KANSAS AREA OFFICE
Davis Creek Dam recorded the greatest precipitation total ever for the month. Merritt Dam recorded the second greatest and Virginia Smith Dam recorded the third greatest for the respective sites. May computed inflow was the greatest ever recorded for the month at Hugh Butler Lake and the third greatest recorded at Harry Strunk Lake since construction.
End of May reservoir storage was the lowest for the month since initial filling at Box Butte and Bonny Reservoir and Waconda Lakes. Storage in Harry Strunk Lake was the second highest ever recorded for the end of May.
WYOMING AREA OFFICE
Bighorn River Basin
Nothing significant to report.
North Platte River Basin
May inflow to Pathfinder Reservoir was the 6th lowest inflow in the last 30 years.
Storage in Pathfinder Reservoirs was the third lowest end of May storage in the last 30 years. The Kendrick storage ownership was the second lowest May ownership in the last 30 years. The Glendo ownership was the third lowest May ownership in the last 30 years.
OKLAHOMA-TEXAS AREA OFFICE
Nothing significant to report.
CORPS OF ENGINEERS - MAIN-STEM RESERVOIRS
Heavy rains in early May pushed the Missouri River to levels not seen since the start of the drought in 2000. The heavy rain, especially in South Dakota, pushed runoff above Sioux City, Iowa in May to 123 percent of normal. The revised 2007 forecast is 20.8 million acre-feet (MAF), 83 percent of normal. Normal runoff is 25.2 MAF. Reservoir storage on June 1 was 38.3 MAF, 1.8 MAF higher than last month.
System storage at the end of May was 38.4 MAF, 1.7 MAF lower than last month.
The six main-stem powerplants generated a record low 285 million kilowatt hours (kWh) of electricity in May, only 35 percent of normal. This level of generation was attributed to the lower pool levels and the decrease in releases from the dams. Total energy production for 2007 is forecasted to be 5.2 billion kilowatt hours (kWh) compared to a normal of 10 billion kWh.