The purpose of this study is to "establish a data base and methodology for classifying...the streams of the Roanoke Basin into a hierarchy of ecological systems" and to "establish evaluative criteria and methodology for classifying and ranking streams within the ecological systems relative to their state of environmental quality" (p. R1).
This volume contains the results of excavations and analyses of Prehistoric archaeological data from four sites located along Potapo Creek in the northwestern part of the McGee Creek project area in southeastern Oklahoma. Some excavations yielded archaeological records of Early Caddoan occupation. Other excavations in the project yielded few artifacts, but important geological and environmental information.
This report describes the results of test excavations at 23 prehistoric and 16 historic sites on the periphery of Lewisville Lake, Denton County, Texas. The purpose of this report is to summarize the character and significance of the archaeological sites that were test excavated and recommendations for mitigation at those sites determined eligible for the National Register.
This report "presents the results and recommendations of a two month investigation conducted at Lake Ray Roberts State Park," as "part of the ongoing effort of the Texas Parks and Wildlife Department to manage and conserve the natural resources of the state and provide...enjoyable recreation areas to the citizens of Texas." The study proposes the expansion of the Isle du Bois and Johnson Branch Units of the Lake Ray Roberts State Park to accommodate the surrounding counties' population growth (p. 6).
"This report presents the results of investigations conducted six years following the impoundment of Ray Roberts Lake." The purpose of the study is "to improve understanding of the impact of [U.S. Army Corps of Engineers] water resource projects, to provide the basis for evaluating the projects' effects on fish and wildlife resources, and to provide the opportunity for better planning and development of water resource projects and natural resource management" in the Lake Ray Roberts area, located in Denton County, Texas (p. 3).
"This report is the final chapter of a long-term project to assess the environmental impacts associated with the construction and operation of Ray Roberts Lake during its first ten years" (p. ii). The purpose of the study is "to improve understanding of the impact of [U.S. Army Corps of Engineers] water resource projects, to provide the basis for evaluating the projects' effects on fish and wildlife resources, and to provide the opportunity for better planning and development of water resource projects and natural resource management" in the Lake Ray Roberts area, located in Denton County, Texas (p. 3).
"This report presents the results of the pre-impoundment investigations" of Ray Roberts Lake. The purpose of the study is "to improve understanding of the impact of [U.S. Army Corps of Engineers] water resource projects, to provide the basis for evaluating the projects' effects on fish and wildlife resources, and to provide the opportunity for better planning and development of water resource projects and natural resource management" in the Lake Ray Roberts area, located in Denton County, Texas (p. 3).
"This report presents the results of the pre-impoundment investigations" of Ray Roberts Lake. The purpose of the study is "to improve understanding of the impact of [U.S. Army Corps of Engineers] water resource projects, to provide the basis for evaluating the projects' effects on fish and wildlife resources, and to provide the opportunity for better planning and development of water resource projects and natural resource management" in the Lake Ray Roberts area, located in Denton County, Texas (p. 3).
This study had three objectives: 1) to develop a method for the quantitative determination of total organic bound chlorine in water and biological samples using Source-Excited X-Ray Fluorescence, 2) to provide training in the use of analytical techniques for students from different disciplines, and 3) to use an interdisciplinary approach involving students of biology, chemistry, and physics to investigate a complex environmental problem. Only the first objective is treated in detail in this volume.
This report represents the findings of a study which "assessed the viability of the Water Quality Corridor Management (WQCM) model in reviewing the status of stream systems, and ultimately, established an accurate mechanism for evaluating the stream corridor and surface water quality draining into Lewisville Lake" (p. 1).
This volume of the report represents the technical findings of a study conducted on the ecological makeup of the Trinity River. The data presented includes: ambient toxicity test results and survival rates, United States Geological Survey (USGS) flow data, water quality data, as well as sediment quality data.
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