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Surface Water Quantity <br />• Watersheds in the area display dendritic drainage patterns characteristic of flow through <br />relatively flat-lying, generally uniform geologic features (Leet, et al., 1982). Eleven <br />drainage basins are within the permit boundary or received drainage from within the <br />permit boundary. All of these drainages are included in the Purgatoire River drainage. <br />The watersheds contain both forested and open slopes. <br />Surface Water Stations <br />Flow data was collected from each of the monitoring stations (Map 2.04.7-1) quarterly <br />during 2006 (Appendix II). Flows were determined from direct measurements of the <br />water in the stream. Analyses of flow data was performed from hydrographs generated <br />from the flows. Copies of these hydrographs are also included in Appendix U. Analyses <br />of the hydrographs from the Lorencito Stations indicate a similarity of flow. Flows varied <br />seasonally dependent on surface run-off and precipitation. Flows at the side canyon <br />stations were extremely low with some stations exhibiting no flow conditions over <br />several months. <br />• Pond Sites <br />In addition to the springs, seeps, and streams, ponds are also present on the site. These <br />ponds are utilized to provide water for livestock and wildlife. A total of nineteen ponds <br />were located by ground and aerial surveying methods (Map 2.04.7-1). A large number of <br />these ponds (eight) are located in the Cow Canyon drainage. The other ponds are <br />scattered over the site, with generally no more than two in any drainage. All ponds <br />located appear to be artificial, with man-made dams at one end. Water level in the ponds <br />varies from season to season depending on runoff received in the drainages and from <br />CBM wells; however, all ponds consistently hold water. Monitoring of pond (PJC-1) <br />was terminated at the end of 2006. <br />Sediment control ponds 6, 7, 8, 9A and 9B and 10 have been constructed to treat <br />disturbed area runoff. Discharge from Ponds 8, and 9B occurred during the third quarter <br />of 2007. Quarterly Discharge Monitoring Reports (DMRs) have been filed with the <br />Colorado Department of Public Health and the Environment with copies to the Division. <br />0 7