Browse on keywords: erosion WA water quality
Search results on 12/11/18
321. American Management Systems Inc., Arlington, VA. 1988. The literature review of ecological benefits of the Conservation Reserve Program.. Office of Policy Planning and Evaluation..
Primarily focuses on vegetated filter strip research and the recent ASCS ammendment to include farmland adjacent to water bodies in the CRP. This is an excellent reference for a potentially high payback technique which is in its infancy and which has extensive application for the Palouse.
2163. George, G.O.. 1981. Best management practices (BMP) demonstration and evaluation project.. OR Agr. Expt. Sta. Special Report #623, p.43-44.
In 1979, the program was expanded to evaluate recognized Best Management Practices (BMP's) and demonstrate their impacts on water quality. All terraces will reduce erosion and sediment and improve water quality, but may not bring soil losses within tolerance limits. Stubble mulch and conservation tillage will reduce water pollution by keeping erosion from initiating during low rainfall or runoff conditions. Conservation practices are more effective in keeping soil losses within established tolerance limits than terraces. They are not as effective in removing sediment pollutants as the terrace once sediment is picked up by the runoff water. Grassed waterways and stream buffer strips reduce sediment delivery to streams, but have little or no impact on in-field erosion. Where combinations of practices were utilized and measurements were made there was decidedly less erosion and, therefore, less sediment for water pollution.
3383. Jennings, M.D. and J.P. Reganold. 1988. Policy and reality of environmentally sensitive areas in Whitman County, WA.. Environmental Management, 12(3):369-380.
A representative watershed within Whitman Co. was used as a case study to identify areas which would qualify for ESA status. In these areas, specific soil, water, and biological characteristics or resources were identified as sensitive to certain common land uses. Significant differences were found between state and county policies regarding ESA's and actual conditions within the watershed. On-site impacts from erosion in the watershed have caused loss of agricultural productivity, water quality, and natural habitats. At least 7.2 T/ha soil eroded for each T grain or pulse produced in Thorn Creek watershed. Average annual suspended sediment loads in surface waters of the Palouse river basin (including Thorn Creek) were 2950 mg/l between 1961 and 1965. 87% of soils within Thorn Creek watershed meet criteria for highly eroded land. Less than 10% of Thorn Creek watershed supports native or exotic noncrop vegetation. Conversion of the watershed to croplands has resulted in a well-defined pattern of upland islands (eyebrows) and wetland corridors, which are the only places where plant and animal species diversity can occur. Existing natural areas within the watershed are degraded in terms of original ecosystem structure, function and size. Effective legal conservation-related land-use considerations should be made if soil, water, and natural habitat resources as identified in this study are to become sustainable. T: T values and percent area for major soil series in Thorn Creek watershed. Features of Thorn Creek subwatersheds.
5012. Papendick, R.I., L.F. Elliott and R.B. Dahlgren. 1986. Environmental consequences of modern production agriculture: How can alternative agriculture address these issues and concerns?. Am. J. Alt. Agr. 1(1):3-10.
The problems of conventional agricultural practices are discussed and compared with the potential improvements from conservation tillage and organic farming. "The extensive crop rotations, which include legumes for forage and green manure, cover crops, and meadows, increase soil resistance to erosion and soil organic matter content, when compared with intensive tillage, monoculture, and row crop tolerance (T) value." These systems decrease related environmental hazards and benefit wildlife. T: fertilizer N used in the U.S., 1959-1983.
5909. Roe, R.D.. 1989. 1989 National water quality project proposal south fork Palouse River watershed.. Soil Conservation Service, Whitman Co., Colfax, WA.
A proposal for coordinated watershed approach in water quality improvement through conservation farming. T: Total acres to be treated in the project area by practice. Estimated cost-share by practice and total cost-shares needed for the project area. Estimated tons of soil that would be saved.
6047. Sauchyn, D.J.. 1989. Evaluation and mapping of non-point source pollution with ARC/INF. Dept. of Geography, U. of Regina, Saskatchewan, Canada.
This paper demonstrates the combined use of a runoff / erosion / pollution model and a geographic information system to evaluate and map the hydrologic and geomorphic responses of a small watershed to a single rainstorm. T: Many.
6957. USDA. 1978. Palouse cooperative river basin study.. SCS, FS, ESCS - USDA.
Excellent summary of soil erosion problem and possible management approaches in the Palouse; extensive data on land use, soil erosion, future scenarios; history of agriculture in the area; bibliography.
10157. Wohld, M.. 1991 Mar.. Sidehill tiling successfully reducing erosion.. Washington Farmer-Stockman, p. 10A.
Installation of hillside tiles has been reducing erosion for some Missouri Flat Creek farmers by removing excess water from hillsides to drainage channels. The Palouse Conservation District plans to evaluate the practice. If benefits can be documented, sidehill drainages could become a practice which would qualify for state water quality improvement cost-sharing funds.