Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Two years before impoundment, the trophic status of Lake Ray Roberts was predicted by applying the total phosphorus input into the Organization for Economic Cooperation and Development (OECD) eutrophication model. Predicted mean summer epilimnetic (MSE) chlorophyll a of Elm Fork arm, Isle duBois arm and Main Body were in the eutrophic category of the OECD model. Observed MSE chlorophyll a two years after impoundment of Elm Fork arm, Isle duBois and Main Body had not reached their predicted means and were at the mesotrophic-eutrophic boundary of the OECD model. Six years after impoundment, observed MSE chlorophyll a for Main Body, was closer to its predicted mean and in the eutrophic category of the OECD model. Six years after impoundment, Elm Fork arm was the most productive area of Lake Ray Roberts. Observed means of chlorophyll a, total phosphates, suspended solids and turbidity were often highest in the Elm Fork arm. Wastewater effluent from Gainesville and Valley View, TX, had an impact on productivity in Elm Fork arm.

This conference report contains discussions and papers from a symposium hosted at Texas Christian University, in Fort Worth, Texas, examining the ecological health of the Upper Trinity River, and the impacts of various human activity, such as agriculture, urbanization, and waste management. The papers cover the effect of water quality on urban rivers, long-term water quality trends in the Trinity River, solutions that may improve water quality in the river, as well as biological, agricultural and waste-water issues.

Documentation of social impacts resulting from the construction of Lake Ray Roberts is to be incorporated into a two year post-impoundment study. Research objectives are to: 1) locate current residences of landowners and previous landowners who were displaced; 2) determine social impacts resulting from construction of Lake Ray Roberts; 3) document degree of satisfaction with current living conditions; 4) document landowners' degree of satisfaction associated with COE negotiations; 5) document landowners' observations. Landowners were identified by telephone and sent a mail-back questionnaire. Respondents were generally happy with current residences and communities. While courtesy and sufficient information were provided by the COE, respondents would have preferred for property settlements to be more consistent and timely.

Index map for Cooke County, Texas showing the distribution of census blocks and smaller inset areas for which the U.S. Census Bureau collected data. The plotted map scale is 1:88,451.

Parent map for Denton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:10,000.

Parent map for Grayson County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:12,500.

Inset map for Cooke County, Texas showing detail within a census block for which the U.S. Census Bureau collected data. The plotted map scale is 1:7,000.

Parent map for Denton County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:10,000.

Parent map for Cooke County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.

Index map for Denton County, Texas showing the distribution of census blocks and smaller inset areas for which the U.S. Census Bureau collected data. The plotted map scale is 1:87,409.

Parent map for Grayson County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:12,500.

Parent map for Cooke County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.

Parent map for Wise County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.

Index map for Montague County, Texas showing the distribution of census blocks and smaller inset areas for which the U.S. Census Bureau collected data. The plotted map scale is 1:88,452.

Parent map for Montague County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.

Parent map for Cooke County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.

Parent map for Montague County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.

Parent map for Cooke County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.

Parent map for Grayson County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:12,500.

Parent map for Cooke County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.

Parent map for Cooke County, Texas showing the area of one geographic block for which the U.S. Census Bureau collected data. The plotted map scale is 1:17,500.