Introduction._____________________________________________________ 2 Geography and economy.__________________________________________ 2 Water use_________________________________________________________ 4 General geology.__________________________________________________ 4 Structural geology and related landforms.________________________ 6 Hydrogeology.____________________________________________________ 7 Definition of selected hydrologic terms.__________________________ 7 Permeability of the Lee Formation______________________________ 9 Potential yields from the Lee Formation___._____________-_______.
Hydrographs showing discharge of Zekiah Swamp Run at Routes 382 (site 1), 5 (site 5), and 6 (site 10). . . 13. Graph showing discharge per square mile at synoptic survey sites and relation to that at gaging station on Zekiah Swamp Run at Route 6 (site 10)... 14. Graph showing specific conductance of streamflow at synoptic survey sites and relation to that at gaging station on Zekiah Swamp Run at Route 6 (site 10). . .
These logs include natural gamma, electric, caliper, temperature, fluid conductivity, and fluid velocity. Most of the logs are for wells in the Coastal Plain Province of eastern Virginia. Geophysical logs aid in the interpretation of properties of earth materials, including the capacity to store and transmit water in the immediate vicinity of the well bore.
The water resources of Prince William Forest Park are described and possible locations for additional supply wells and springs are identified. Specific-capacity tests at eight supply wells in 1982 indicate little change in yield since about 1970. At Goodwill Camp No. 3, an unused spring with a yield of approximately 7 gallons per minute is available to augment the present supply. At Park Headquarters, an unused well could contribute approximately 14 gallons per minute to the present supply. All but two of the supply wells have been drilled along or near ridge tops. The water in these wells primarily comes from the overlying thick sections of saprolite or Cretaceous sediments that slowly release water to the underlying rocks.
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