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National water summary 1984; hydrologic events, selected water-quality trends, and ground-water resources

Water Supply Paper 2275

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Abstract

Water year 1984 was a year of extreme hydrologic conditions. For the third consecutive year, precipita- tion and resulting runoff were well above long-term averages in most of the Nation and as much as 400 percent above average in the Southwest. National flood damages during the year were the third highest in a 10-year period (1975-84) an estimated $3.5 to $4 bil- lion. In many of the larger river systems, monthly stream discharges were above normal, as they have been for the last 2 water years, and, with the exception of a few reservoir systems, end-of-month reservoir storage also remained above normal. The Great Salt Lake reached its highest level since 1873 as a result of these conditions. During a 9.6-foot rise from September 1982 to July 1984, the area of the lake expanded by 600 square miles (an increase of 35 percent), resulting in an estimated $212 million in damages to recreational facili- ties and industrial installations built on the exposed lake bed during former lower levels. Other lake levels in closed basins of the Western United States also have risen over the past few years, thereby flooding com- munities, recreational facilities, and agricultural lands. In contrast to this predominant pattern of wet condi- tions, several areas of the country, mainly west Texas and Hawaii, have experienced persistent droughts. Most recently, very dry conditions existed in parts of northern Montana. These hydrologic conditions and 100 specific events are reviewed in the "Hydrologic Conditions and Water-Related Events, Water Year 1984" part of the 1984 National Water Summary.

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Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
National water summary 1984; hydrologic events, selected water-quality trends, and ground-water resources
Series title:
Water Supply Paper
Series number:
2275
Year Published:
1985
Language:
English
Publisher:
U.S. Geological Survey
Contributing office(s):
Wisconsin Water Science Center
Description:
x, 467 p.
Country:
United States
Online Only (Y/N):
N
Additional Online Files (Y/N):
N