Unified Interior Regions

Region 4: Mississippi Basin

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Year Published: 1986

Discharge ratings for control gates at Mississippi River lock and dam 12, Bellevue, Iowa

The water level of the navigation pools on the Mississippi River are maintained by the operation of tainter and roller gates at the locks and dams. Discharge ratings for the gates on Lock and Dam 12, at Bellevue, Iowa, were developed from current-meter discharge measurements made in the forebays of the gate structures. Methodology is given to...

Heinitz, Albert J.
Discharge ratings for control gates at Mississippi River lock and dam 12, Bellevue, Iowa; 1986; WRI; 86-4135; Heinitz, Albert J.

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Year Published: 1986

Floods in south-central Iowa

Flood profiles and discharges for the great floods of 1981 and 1982 in south-central Iowa are given. The profiles cover the South River, Squaw Creek, Otter Creek, White Breast Creek, Cedar Creek, North Cedar Creek, Chariton River and the South Fork Chariton River. The July 3, 1982, flood-peak discharge at the Cedar Creek gaging stations (05489000...

Heinitz, Albert J.
Floods in south-central Iowa; 1986; OFR; 85-100; Heinitz, Albert J.

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Year Published: 1986

Floods in the Floyd River basin, Iowa

Flood elevation profiles and flood peak discharges for the floods of 1953, 1962, 1973, and 1983 in the Floyd River basin are given in this report. The profiles cover the Floyd and West Branch Floyd Rivers. The 1953 flood is the greatest known on the Floyd River since at least 1892.

Heinitz, A.J.
Floods in the Floyd River basin, Iowa; 1986; OFR; 86-476; Heinitz, A. J.

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Year Published: 1986

Floods of June-July 1982, in Iowa

Record flood-peak discharges occurred in June and July, 1982, in southwestern, south-central, and east-central Iowa. The record flood peaks resulted from rainfalls of 6 to 8 inches on soil saturated from persistent moderate to heavy rainfalls that began in May and continued through mid July. May was the wettest across Iowa since 1959, averaging...

Heinitz, A.J.
Floods of June-July 1982, in Iowa; 1986; OFR; 85-151; Heinitz, A. J.

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Year Published: 1986

Technique for predicting ground-water discharge to surface coal mines and resulting changes in head

Changes in seepage flux and head (groundwater level) from groundwater drainage into a surface coal mine can be predicted by a technique that considers drainage from the unsaturated zone. The user applies site-specific data to precalculated head and seepage-flux profiles. Groundwater flow through hypothetical aquifer cross sections was simulated...

Weiss, L.S.; Galloway, D.L.; Ishii, Audrey L.
Technique for predicting ground-water discharge to surface coal mines and resulting changes in head; 1986; WRI; 86-4156; Weiss, L. S.; Galloway, D. L.; Ishii, Audrey L.

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Year Published: 1986

Water resources data Iowa, water year 1985

Water resources data for the 1985 water year for Iowa consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; ground-water levels and ground-water quality. This report contains discharge records for 111 stream-gaging stations; stage and contents for 8 lakes and reservoirs;...

Melcher, N.B.; Detroy, M.G.; Matthes, W.J.; Hansen, R.E.
Water resources data Iowa, water year 1985; 1986; WDR; IA-85-1; Melcher, N. B.; Detroy, M. G.; Matthes, W. J.; Hansen, R. E.

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Year Published: 1986

Hydrology of carbonate aquifers in southwestern Linn County and adjacent parts of Benton, Iowa, and Johnson Counties, Iowa

Groundwater is the major source of water in Linn County and the surrounding area. Approximately 90 percent of the groundwater production is from Silurian, Devonian, and Quaternary aquifers. The Silurian and Devonian aquifers consist of limestone and dolomite with minor shale beds, which have a regional dip to the southwest of approximately 20 feet...

Wahl, Kenneth; Bunker, Bill J.

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Year Published: 1986

Organochlorine chemical residues in bluegills and common carp from the irrigated San Joaquin Valley floor, California

Samples of bluegills (Lepomis macrochirus) and common carp (Cyprinus carpio) collected from the San Joaquin River and two tributaries (Merced River and Salt Slough) in California were analyzed for 21 organochlorine chemical residues by gas chromatography to determine if pesticide contamination was confined to downstream sites exposed to irrigated...

Saiki, Michael K.; Schmitt, Christopher J.

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Year Published: 1986

Iowa joins in monitoring acid rain

No abstract available.

Buchmiller, R.C.