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<br />002220
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<br />STREAMFLOW CONDITIONS DURING AUGUST 1985
<br />
<br />Streamflow generally decreased seasonaUy in the
<br />Northeast, the area from the Rocky Mountains to the
<br />Pacific Coast, and also in Alaska. Montana, South
<br />Dakota, Minnesota. Iowa. Oklahoma, and Texas. Flows
<br />generally increased or were variable in the rest of the
<br />United States and southern Canada,
<br />Below-normal streamflow persisted in parts of New
<br />York, Florida, Louisiana, Missouri, Iowa, Minnesota,
<br />South Dakota, Arizona, California, Nevada, Wyoming,
<br />Idaho. Montana, Alberta. British Columbia. and Washing.
<br />ton. Monthly mean flows moved into t.he below-normal
<br />range in parts of Alaska. California, Nevada, Arizona,
<br />New Mexico, Texas, Iowa, Maryland, New York, Nova
<br />Scotia, and Quebec. In New York. both the monthly
<br />mean discharge of 387 cubic feet per second (cfs) and
<br />the daily mean flow of 309 cfs on August 24 of the
<br />Hudson River at Hadley were the lowest for August in
<br />64 years of record. Monthly mean flows were also low-
<br />est of record for August in parts of Quebec and on the
<br />Columbia River at the Dalles, Oregon (see table on
<br />page 3),
<br />Flows remained in the above.normal range in parts of
<br />Alaska, Utah. Colorado. North Dakota, Minnesota.
<br />Manitoba, Ontario, New Brunswick, West Virginia,
<br />Maryland, Tennessee, Alabama, and Missouri. Stream-
<br />flow increased into the above-normal range in parts of
<br />Colorado, Nebraska. Kansas, Oklahoma, Missouri,
<br />IJIinois, Indiana, Minnesota, Wisconsin, Connecticut,
<br />Tennessee. Virginia, North Carolina, South Carolina.
<br />Georgia, Alabama, Mississippi, and Puerto Rico. In
<br />Kansas, both the monthly mean discharge of 3,510 cfs
<br />and the daily mean flow of ]9,900 cfs on August 7 were
<br />
<br />the highest of record for August in 59 years of record
<br />(see graph and tabie on page 3), Month]y mean flows
<br />were also highest of record for August in part of
<br />Alabama and on the Red River of the North at Grand
<br />Forks, North Dakota (see table on page 3).
<br />Tornadoes and hail storms accompanied heavy rains
<br />in the area of Cheyenne, Wyoming. on August 2 as
<br />severe floods affected the city. Nine persons were killed
<br />and 30 were reported missing. Damage estimates were
<br />not available.
<br />Contents of about 46 percent of reporting reservoirs
<br />declined during August but only about 30 percent reo
<br />corded below-average contents, most of them located in
<br />the Northeast, Texas, Wyoming, Montana, and California,
<br />The New York City reservoir system was still well below
<br />normal August levels and water-use restrictions were still
<br />in effect in New York City and parts of the Delaware
<br />River basin.
<br />The combined flow of the three largest rivers in the
<br />lower 48 States~Mississippi, S1. Lawrence, and Colum-
<br />bia Rivers-was 729,668 cfs during August, 15 percent
<br />below last month, and 2 percent below the long-term
<br />average. These three large river systems account for run-
<br />off from more than half the conterminous United States
<br />and provide a useful check on the status of the Nation's
<br />surface-water resources.
<br />The hydmgraphs on page 3 show streamflow at four
<br />sites scattered across the Nation, with three of the four
<br />showing flows currently in the normal range. They are
<br />representative of conditions in the Nation since about
<br />84 percent of the index stations have flows at or above
<br />the normal range for August.
<br />
<br />CONTENTS
<br />
<br />Streamflow during August 1985 (map). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
<br />Streamflow conditions during August 1985 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
<br />Ground-water conditions during August 1985. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : : : : : : : : : : : : : : : : : :
<br />Usable contents for selected reservoirs near end of August 1985 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
<br />Usable contents of selected reservoirs and reservoir systems, July 1982 to August 1985 (graphs) . . . . . . . . . . . . . . . . . .
<br />Flow of large rivers during August 1985 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
<br />Dissolved solids and water temperatures, August 1985, at downstream sites on six large rivers. . . . . . . . . . . . . . . . . . . .
<br />Precipitation forecast for September 1985. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . _ . . . . . . . . . . . . . . . . . .
<br />Selected papers in the hydrologic sciences 1985 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
<br />Total precipitation, August 1985 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : : : : : : : : : : : : : : : : : :
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<br />Explanation of data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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