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Pre-Impoundment Estimations of Nutrient Loading to Ray Roberts Lake and Prediction of Post-Inundation Trophic Status
Excessive nutrient loading of natural and artificial lakes has led, in some systems, to plethoric algal and aquatic macrophyte growth which can result in aesthetic degradation and undesirable tastes and odors. It would be advantageous to have some indication of the potential trophic status of a reservoir before it is filled. An objective of this study was to assess the water quality and nutrient loading potential of the tributaries entering Ray Roberts Lake, a large reservoir located in north central Texas. Samples from a maximum of thirteen sites were collected on the Elm Fork, Trinity River, Isle duBois Creek, and five additional tributaries. Data were also collected during six storms, from atmospheric deposition collectors, and from soil-water microcosms. The relationship between watershed landuse and mean water nutrient concentrations was evaluated. Significant differences will exist between the two major arms of Ray Roberts Lake: Elm Fork, Trinity River and Isle duBois Creek. While the majority of the annual phosphorus and nitrogen load entering both tributaries is coming from overland flow, the proportion is higher in Isle duBois Creek. Point sources in the Elm Fork contribute a larger percentage of the bioavailable phosphorus, which is significantly greater than in Isle duBois Creek. …
Date:
May 1988
Creator:
Pillard, David Alan, 1958-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
[News Clip: Olympic torch]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
June 13, 1984
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Occurrence, Availability, and Chemical Quality of Ground Water in the Cretaceous Aquifers of North-Central Texas: Volume 2
The second volume of a two part report on the Creataceous aquifers in Texas. This volume contains information on water wells, water levels, and chemical analyses.
Date:
July 1982
Creator:
Nordstrom, Philip L.
Object Type:
Report
System:
The Portal to Texas History
McKinney
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:100000
Date:
1985
Creator:
Geological Survey (U.S.)
Object Type:
Map
System:
The Portal to Texas History
Ray Roberts Lake Pre-Impoundment Landuse: [Project Areas]
Map showing the area around Ray Roberts Lake in Northern Texas. It contains a color coded legend indicating a variety of geographical features.
Date:
July 1987
Creator:
CRSLA
Object Type:
Map
System:
The UNT Digital Library
Ray Roberts Lake Pre-Impoundment Landuse: [Fee Areas]
Map showing the area around Ray Roberts Lake in Northern Texas. It contains a color coded legend indicating a variety of geographical features.
Date:
July 1987
Creator:
CRSLA
Object Type:
Map
System:
The UNT Digital Library
Ray Roberts Lake Pre-Construction Landuse, January 1980
Map showing the area around Ray Roberts Lake in Northern Texas. It contains a color coded legend indicating a variety of geographical features.
Date:
January 1980
Creator:
CRSLA
Object Type:
Map
System:
The UNT Digital Library
Occurrence, Availability and Chemical Quality of Ground Water in the Cretaceous Aquifers of North-Central Texas: Volume 1
Report on the quality and availability of ground water in the cretaceous aquifers of north-central Texas. Includes maps, hydrographs, rainfall data, pumpage, and more.
Date:
April 1982
Creator:
Nordstrom, Phillip L.
Object Type:
Report
System:
The Portal to Texas History