Floods of May 1978 in southeastern Montana and northeastern Wyoming

Professional Paper 1244
By: , and 



Heavy rain and some snow fell on previously saturated ground over southeastern Montana and northeastern Wyoming during May 16-19, 1978. The maximum amount of 7.60 inches within a 72-hour period observed at Lame Deer, Montana, set a record for the month of May in that region. Heavy flooding occurred in the drainages of the Yellowstone River and its tributaries as well as the Belle Fourche, Cheyenne, and North Platte Rivers. The previous maximum flood of record was exceeded at 48 gaged sites, and the 1-percent chance flood was equaled or exceeded at 24 sites. Flood damage was extensive, exceeding $33 million. Nineteen counties in the two States were declared major disaster areas. Mean daily suspended-sediment discharges exceeded previously recorded maximum mean daily values at four sites on the Powder River. The maximum daily suspended-sediment discharge of 2,810,000 tons per day occurred on May 20 at the Site Powder River near Arvada, Wyoming. (USGS)

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Floods of May 1978 in southeastern Montana and northeastern Wyoming
Series title Professional Paper
Series number 1244
DOI 10.3133/pp1244
Edition -
Year Published 1984
Language ENGLISH
Publisher U.S. G.P.O. ; For sale by the Distribution Branch, U.S. Geological Survey,
Description 74 p.