Record Display for the EPA National Library Catalog

RECORD NUMBER: 30 OF 205

OLS Field Name OLS Field Data
Main Title Continuation of Studies on the Hydrology of Ponds and Small Lakes.
Author Allre, E. R. ; Manso, P. W. ; Schwart, G. M. ; Golan, P. ; Reink, J. W. ;
CORP Author Minnesota Agricultural Experiment Station, St. Paul.
Year Published 1971
Report Number Technical Bull-274; OWRR-B-002-MINN; 01327,; B-002-MINN(4)
Stock Number PB-204 543
Additional Subjects ( Lagoons(Ponds) ; Hydrology) ; ( Surface waters ; Conservation) ; Ponds ; Lakes ; Hydrologic cycle ; Data acquisition ; Computer programming ; Ice formation ; Seepage ; Transpiration ; Evaporation ; Planning ; Minnesota ; Water budget
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB-204 543 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 62p
Abstract
The study of th (Author)E HYDROLOGY OF SMALL LAKES AND PONDS IN Minnesota started in 1962 as a project based on measuring the change in water and ice levels on 46 small bodies of water. The results of 3 years of study were published in 1968. Four of the 46 bodies of water were selected for more detailed studies. Water budgets were calculated by a computer program from field data collected by recording instruments. Evaporation and net seepage were calculated with the quasimass transfer equation. Average net seepage of the four bodies of water was 1.2 feet per year. The seepage rate accounts for about 12 to 20 percent of the total losses. It is concluded that the regimen of shallow bodies of water in Minnesota is controlled primarily by the ratio between precipitation and evaporation. The way to conserve water resources for groundwater supplies is to induce infiltration over the surface rather than to store water in open ponds where evaporation causes it to be lost to the atmosphere.