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<br />002210
<br />
<br />Provisional data; subject to revision
<br />
<br />WATER LEVELS IN KEY OBSERVATION WELLS IN SOME REPRESENTATIVE AQUIFERS IN
<br />THE CONTERMINOUS UNITED STATES-APRIL /985
<br />
<br /> Water level in Departure Net change in water Year
<br />Aquifer and location feet with ref. from level in feet since: records Remarks
<br /> ere nee to I:md- average began
<br /> surface datum in feet Last month Last year
<br />Glacial drift nt Hanska, south-ccntral
<br />Minnesota .. . ' . " . -4.44 +1.22 -t{).84 +1.04 1942
<br />Glacial drift al Roscommon in north-cenlral Equals April
<br />part of Lower Peninsula, Michigan -2.31 +1.52 +1.53 +1.23 1935 1971 low.
<br />Glacial drift at Marion, Iowa. . . -2.06 +1.25 -t{).12 -0.21 1941
<br />Glacial drift at Princeton in northwestern
<br />Illinois . . . . -6.55 +1.13 -0.75 -0.05 1943
<br />Petersburg Granite. southeastern Piedmont
<br />near rail Zone, Colonial Heights, Virginio . -16.09 -1.8B -0.32 -4.51 1939
<br />Glacial outwash sand and gr:lvel, Louisville,
<br />Kentucky (U.S. well no. 2). -16.50 +B.83 +D.03 +1.07 1946
<br />500-foot sand aquifer near Memphis,
<br />Tennessee (U.S. well no. 2) . . . . -103.B2 -15.46 -0.16 -0.37 1941 April low.
<br />Granite in eastern Piedmont Province,
<br />Chapel Hill, North Carolina (U.S.
<br />well no. 5) -40.00 +1.36 -0.06 -4.69 1931
<br />Sparla Sand in Pine Bluff industrial
<br />area, Arkansas . .. . .. . -222.85 -17.08 +] .95 +1.80 195B
<br />Eutaw Formation in the City of
<br />Montgomery, Alabama (U.S. well no. 4). -20.1 -1.5 -2.6 -3.6 1952
<br />Limestone aquiff'f on Cockspur Island,
<br />Savannah 3.Iea, Georgia (U.S. weU no. 6). -33.18 -7.78 -0.53 +2.22 1956 April low.
<br />Sand and gravel in Pugct Trough,
<br />Tacoma, Washington ... . -99.08 +7.64 +D.20 0 1952
<br />Pleistocene glacial outwash gravel, North Pole,
<br />northern Idaho (U.S. well no. 3) . . . . -459.3 +2.0 -0.7 -3.2 1929
<br />Snake River Group: southwestern Snake
<br />River Plain aquifer, at Eden, Id::tho . -125.0 -3.4 -0.2 +1.7 1957
<br />AUuvi:.l1 vaHey fill in FloweU area. Millard
<br />County, Utah (U.S. well no. 9) . . +1.31 +35.26 -0.09 +19.13 1929 April high.
<br />Alluvial sand and gravel, Platte River Valley,
<br />Ashl:rnd, NebraSKa (U.S. well no. 6) -0.30 +4.74 +4.60 +1.37 1935 April high.
<br />AlluviaJ valley fill in Steptoe Valley,
<br />Nevada. -7.53 +5.13 -t{).09 +1.25 1950 Alltime high.
<br />Pleistocene terrace deposits in Kansas
<br />River valley, at Lawrence, north-
<br />eastern Kansas. . . , . , . . . -19.21 +1.66 -0.54 -t{).35 1953
<br />AllUVlUnl and Paso Robles clay, sand, and
<br />gravel, Santa Maria Valley, California. . . -101.17 +40.07 -I.5B -4.B1 1957
<br />Valley flU, Elfrida area. Douglas, Arizon:l
<br />(U.S. well no. 15). ... . -105.40 -26.36 -t{).10 +4.00 1951
<br />HuecCl bolson, EI Paso areJ, Texas -263.44 -19.10 -1.83 -3.13 1965 ApriJlow.
<br />EVJngeline aquifer, Houston area, Texas. , . -302.59 -7.51 +1.89 +3.55 1965
<br />
<br />Minnesota, Michigan, and Iowa. Levels were below aver-
<br />age in Ohio. No new high or low levels occurred during
<br />the month. However, the water level in the key well at
<br />Roscornmon in the north-central part of the Lower
<br />Peninsula in Michigan reached the April high level set in
<br />1971.
<br />In the western States, ground-water levels rose in
<br />Washington, North Dakota. and Arizona. and declined in
<br />southern California and in most of the key weUs in
<br />
<br />Idaho, Utah, and New Mexico. Trends were mixed in
<br />other States. Water levels were above average in Wash.
<br />ington, below average in North Dakota and Arizona, and
<br />mixed with respect to average in other States. New high
<br />ground-water levels for April were recorded in Idaho,
<br />Nebraska, and Utah, and a new all time high level was
<br />reached in the Steptoe Valley well in Nevada in 34 years
<br />of record. New low levels for April were reached in
<br />New Mexico and Texas.
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