| Main Title |
Preliminary Assessment of Multiphase Restoration Efforts at Liberty Lake, Washington. |
| Author |
Funk, William H. ;
Gibbons, Harry L. ;
Bailey, Gary C. ;
Mawson, Simon ;
Gibbons, Maribeth ;
|
| CORP Author |
Washington State Univ., Pullman. Dept. of Civil and Environmental Engineering.;Corvallis Environmental Research Lab., OR. |
| Year Published |
1982 |
| Report Number |
EPA-R-805604-01-1; EPA-600/3-82-005; |
| Stock Number |
PB82-188251 |
| Additional Subjects |
Phosphorus ;
Water pollution control ;
Liberty Lake ;
Algae ;
Nutrients ;
Restoring ;
Alums ;
Flushing ;
Aluminum sulfate ;
Septic tanks ;
Seepage ;
Dredging ;
Sediments ;
Runoff ;
Sewers ;
Assessments ;
Washington(State) ;
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB82-188251 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
67p |
| Abstract |
Liberty Lake is a 288 ha body of water located in Eastern Washington. In 1974 an alum treatment of the lake, aimed at late summer and fall release of phosphorus, successfully demonstrated the need to control internal cycling of nutrients (especially phosphorus) as well as surface and subsurface input. Macrophytes growing in rich sediments acted as nutrient pumps releasing phosphorus above the floc layer. This event--as well as flushing of the bird refuge and marshland to the south of the lake and continued input of septic tanks--overcame the alum treatment within three years. The three-year respite marked the first period in 10 years to be free of bluegreen algae problems. Long term restoration efforts began in 1978-79 with sewering of the lake periphery. |
