While sediment in surface waters may be one of our more serious water quality problems, the sources of this sediment are not well defined. Sediment control programs for water quality are presently concentrating on the application of best management practices (BMP's) across the watershed with little regard to location. The authors have studied sediment movement patterns in a midwestern watershed using fallout cesium-137 techniques and have concluded these programs may be largely ineffective. The implications from this work are that cropped floodplains are the most severely eroded lands in the watershed, followed by cropped lands bordering the floodplains. Most of the eroded sediment either originates on or is delivered directly to the active floodplain and hence to the stream. The authors conclude that the majority of cropped uplands may not be nearly as important in determining sediment levels in streams as is generally thought.
- Sources of suspended sediment: Spoon River, IllinoisNorth-Central SectionGeol. Soc. of Am., South. Ill. Univ.Carbondale, 1977.
Illinois Environmental Protection Agency, Problem assessment report: Soil erosion subcommittee, 72Ill. Agric. Task Force, Springfield, 1978a.
Illinois Environmental Protection Agency, Summary of the Agricultural Task Force water quality plan recommendations, 31, Task Force on Agric. Non-Point Sources of Pollut., Springfield, 1978b.
- Observations on the sources of sediment in Illinois streamsRep. Invest. 18, 24Ill. Water Info. System, Springfield, 1979.
- Redistribution of cesium-137 in southeastern watershedsU.S. ERDA Rep. CONF-740513Savannah River Ecol. Lab., 1975.
- Estimating field erosion losses from fallout cesium-137 measurements, IAHS-AISH Publ., 122, 26–33, 1977.
- Accumulation of fallout Cesium-137 in soil and sediments in selected watersheds, Water Resour. Res., 9, 676–686, 1973.
- Sedimentation rates in the upper Mississippi RiverSymposium on Inland Waterways for Navigation, Flood Control and Water DiversionsColo. State Univ.Ft. CollinsAug. 10–12, 1976.
- Redistribution of cesium-137 due to erosional processesU.S. ERDA Rep. 1976Savannah River Ecol. Lab., 1977.
- Determination of fallout Cesium137 and natural gamma-ray emitting radionuclides in sediments, Int. J. Appl. Radiat. Isot., 24, 575–578, 1973.
- Fallout cesium-137: A tool in conservation research, J. Soil Water Conserv., 30, 283–286, 1975.
- Fallout cesium-137 in cultivated and noncultivated north central United States watershed, J. Environ. Qual., 7, 40–44, 1978.
- The distribution of cesium-137 in the litter and upper 10 centimeters of soil under different cover types in Northern Mississippi, Health Phys., 22, 197–198, 1972.
- Distribution of cesium in a small watershed in northern MississippiU.S. AEC Rep. CONF-710501-pl, 129–132Oak Ridge Natl. Lab., Oak Ridge, Tenn., 1973.
- Fallout cesium-137 in the soils and sediments of three small watersheds, Ecology, 55, 887–890, 1974a.
- Estimating soil erosion from the redistribution of fallout cesium-137, Soil Sci. Soc. Am. Proc., 38, 137–139, 1974b.
- Use and misuse of the USLE, J. Soil Water Conserv., 31, 5–9, 1977.