PERMFILE59063 - Laserfiche WebLink

Home Browse Search

• 2.04 Application for Permit for Underground Mlning Activities - Dorchester No. 1 Mine. Fremont County. Colorado. 2.04.5 General Description of Hydrology and Geology Attachment III contains the primary statement on the general description of hydrology and geology In the Permit and general areas. The Infonretion which follows Is supplemental to data presented in Attachment III and Is offered In direct response to (tans listed In the Adequacy Review dated Aprii 20, 1981. Baseline tnforration on the discharge and quality of Newlin Creek is rot available prior to 1980. The U.S. Geological Survey does not maintain a gaging station on Newlin Creek. Diversion records are maintained by Water Division 2 of the State of Colorado, Department of Natural Resources, for water rights 1n the Arkansas River basin. These • records Include Che diversion dam and pipeline maintained by the City of Florence south of the Permit Area. The City of Florence has the physical and legal ability to divert the entire flay of Newlin Creek to its storage reservoirs outside the Newlin Greek drainage Csee Figure 2.04.7C1c) and Hydrology Map, Sheet 1). Measurement Is accomplished by a wler at the pipeline delivery point. Available records are sum~arized in Table 2.04.SC1). Discharges to Newlin Creek are very small, with spring snowrelt providing the maJor volume of water each year. Peak discharges occur either as snowrielt runoff or late scanner thunderstorm events. Magpie Creek historic flows are unknown. Data gathered by the State of Colorado and various mining companies pursuant to regulations being enforced by Mined Land Reclamation are the only sources of Information of discharges on lower Newlin Creek and Magpie Creek. A single runoff event has been doamented in Magpie . Creek, resulting to a peak discharge of approximately 23 cfs. This event occurred Lhe week of July 6, 1981 and was reported In the "Determination of Hydrologic Consequences" report prepared for G.E.C. 1