Browsing by Subject "Woodbine Formation"
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Item Geologic and Hydrogeologic Framework of Regional Aquifers in the Twin Mountains, Paluxy, and Woodbine Formations Near the SSC Site, North-Central Texas(1996) Dutton, Alan R.; Mace, Robert E. (Robert Earl), 1967-; Nance, Hardie Seay, 1948-; Blum, Martina U.Water-utility districts and many municipalities in North-Central Texas recently obtained as much as 100 percent of their water supply from deep regional aquifers in Cretaceous formations. Use of groundwater from the aquifers during the past century has resulted in water-level declines of as much as 850 ft (259 m), especially in Dallas and Tarrant Counties. Future water-level changes will depend on the amount of groundwater produced to help meet growing water-supply needs for municipalities, industries, and agriculture throughout North-Central Texas. It is probable that a significant part of the increased water demand will be met by groundwater although at less than historic rates. The objective of this study was to develop a predictive tool for studying the effect of future groundwater production from regional aquifers in North-Central Texas. To do this, we reviewed the history of groundwater development, hydrogeology of the regional aquifers, and constructed numerical models of groundwater flow. A cross-sectional model of both aquifers and confining layers was used to evaluate model boundary conditions and the vertical hydrologic properties of the confining layers. Results and insights from the cross-sectional model were used in a three-dimensional simulation of groundwater flow in the deep aquifers. The layers of the regional confining system were not explicitly included in the three-dimensional model. Hydrogeologic properties were assigned on the basis of aquifer test results and stratigraphic mapping of sandstone distribution in the aquifer units.Item Geologic and Hydrogeologic Framework of Regional Aquifers in the Twin Mountains, Paluxy, and Woodbine Formations Near the SSC Site, North-Central Texas (Draft)(1994) Mace, Robert E. (Robert Earl), 1967-; Nance, Hardie Seay, 1948-; Dutton, Alan R.Water-utility districts and municipalities in North-Central Texas recently obtained as much as 100 percent of their water supply from deep regional aquifers in Cretaceous formations. Use of groundwater from the aquifers during the past century has resulted in water-level declines of as much as 800 ft (243.8 m) in Dallas and Tarrant Counties. Future continued water-level decline throughout North-Central Texas will depend on the amount of groundwater produced to help meet increased water-supply needs for municipal, industrial, and agricultural growth. It is probable that a significant part of the increased water demand will be met by groundwater. The objectives of this study were to develop a hydrologic model of the complex interrelations among aquifer stratigraphy, hydrologic properties, and groundwater availability and, given expected patterns of future groundwater demand, to predict water-level changes in the regional aquifers that underlie North-Central Texas. A cross-sectional model of both aquifers and confining layers was used to evaluate model boundary conditions and the vertical hydrologic properties of the confining layers. Results and insights from the cross-sectional model were used in a three-dimensional simulation of groundwater flow in the deep aquifers. The layers of a regional confining system were not explicitly included in the three-dimensional model. Hydrogeologic properties were assigned based on aquifer test results and stratigraphic mapping of sandstone distribution in the aquifer units.Item Letter to Al H. Hammel from H.B. Stenzel on 1965-01-27(1965-01-27) Stenzel, Henryk B.Item Letter to H.B. Stenzel from Al H. Hammel on 1965-02-07(1965-02-07) Hammel, Al H.Item Letter to H.B. Stenzel from Alfred D. Zapp on 1951-11-26(1951-11-26) Zapp, Alfred D.Item Letter to H.B. Stenzel from L.W. Stephenson on 1949-12-09(1949-12-09) Stephenson, L.W.Item Letter to H.B. Stenzel from Lloyd W. Stephenson on 1954-01-05(1954-01-05) Stephenson, Lloyd W.Item Letter to H.B. Stenzel from Robert O. Vernon on 1950-01-09(1950-01-09) Vernon, Robert O.Item Letter to H.B. Stenzel from Victor van Straelen on 1954-05-12(1954-05-12) van Straelen, VictorItem Letter to H.B. Stenzel from W.D.Ian Rolfe on 1961-07-12(1961-07-12) Rolfe, W.D.IanItem Letter to J. Sornay from H.B. Stenzel on 1963-04-11(1963-04-11) Stenzel, Henryk B.Item Letter to John B. Reeside, Jr. from H.B. Stenzel on 1949-10-17(1949-10-17) Stenzel, Henryk B.Item Letter to Keith Young from H.B. Stenzel on 1963-06-07(1963-06-07) Stenzel, Henryk B.Item Letter to W.E. Wrather from H.B. Stenzel on 1954-02-16(1954-02-16) Stenzel, Henryk B.Item The Woodbine Formation(1928) McCarter, William Blair; Not available