PERMFILE48911

• Permit No: C1982055
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: SECTION 2.04 Environmental Resources
• Media Type: D
• Archive: No

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• .7. 1 AnUIFERS ~ _ _ -' `~
Unconsolidated Sediments and Bedrock
Yield Small to Large Quantities
of Ground Water
Alluvium and talus yield more ground water than
bedrock but are less extensive.
Virtually all formations in the Raton Basin store and transmit
water (.fig. 7.1-1). Talus and alluvium yield small (0.5-20 gallons
per minute) to large (100-500 gallons per minute) quantities of
ground water to wells and springs but are limited in areal extent;
• discharges fluctuate seasonally. Bedrock formations generally
yield small,to moderate (20-100 gallons per minute) quantities of
ground water to wells and springs and are widespread. In the north-
western and southwestern corners of the basin, wells and springs
discharging from sandstone and conglomerate may yield large quantities
of ground water. Large diameter wells in the Dakota Sandstone
(Table 7.1-1). may, also, yield large quantities oP ground water.
In highly dissected terrain, outcropping bedrock aquifers are
usually drained by seeps and springs (fig. 7.1-2) and only yield
water that is perched above less permeable formations underlying
the aquifers.
The. principal bedrock aquifers in the area are the Purgatoire
Formation, Dakota Sandstone, upper Carlisle Shale - Fort Hays
• Limestone, Trinidad Sandstone-Vermejo Formation-Raton Formation,
Poison Canyon and Cuchara Formations, Farasita Conglomerate-Devils
Hole Formation, and volcanic rocks (Table 7.1-1). Within these units,
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