Laserfiche WebLink
BEAR CREEK FLOW INFORMATION <br />Date Site B-2 Site B-3 <br />June 10, 2003 0.25 cfs 0.21 cfs <br />June 16, 2003 0.097 cfs 0.088 cfs <br />June 15, 2004 0.02 cfs 0.041 cfs <br />June 22, 2004 0.0 cfs 0.0174 cfs <br />June 15, 2005 1.036 cfs 1.085 cfs <br />3une 30, 2005 0.39 cfs 0.13 cfs <br />The information is collected in order to aid in analyzing 1) potential water depletions and 2) <br />potential for injury to any Bear Creek water rights. The sampled Bear Creek flows were very <br />minimal and typically variable. Analysis of the data suggests no anomalies nor any indication of <br />adverse effects related to mining activities. <br />E-1-Lower Elk Creek <br />Surface water monitoring point E-1 -Lower Elk Creek, an ephemeral drainage, is monitored as a <br />down gradient site to verify that the Elk Creek mine and the surface facility located at Somerset <br />does not have an adverse affect on the quality of runoff in the drainage. During 2005 there was, <br />again, minimal stream flow at E-1 after spring snowmelt. An analysis of the limited data <br />suggests there is no adverse impact of the Elk Creek mine to Lower Elk Creek. <br />E-2- Unger Elk Creek <br />Surface water monitoring point E-2 -Upper Elk creek, an ephemeral drainage, is monitored to <br />verify that the Elk Creek mine does not have an adverse affect on the quality of runoff in the <br />drainage. In addition, the site will serve as an up-gradient site to monitor Elk Creek prior to <br />entering the OMLLC surface facility. During 2005 there was, again, minimal flow at E-2 after <br />spring snowmelt. An analysis of the limited data suggests there is no adverse impact of the Elk <br />Creek mine to Lower Elk Creek. <br />S-1 - Unner Sanborn Creek and S-2 -Lower Sanborn Creek <br />Surface water monitoring points S-1 -Upper Sanborn Creek and S-2 -Lower Sanborn Creek <br />were established to monitor the flow in ephemeral Sanborn Creek above and below the disturbed <br />area of the Sanborn Creek Mine site. Sanborn Creek also received discharge water from the <br />Sanborn Creek mine, consisting primarily of natural mine water inflows and some runoff of <br />imported (from the North Fork intake) water from the mining sections. The mine water <br />discharge (CDPS discharge point 011) commingled with upper Sanborn Creek flow for a <br />distance of approximately 300 feet through culverts under the railroad and highway prior to <br />discharging into the North Fork of the Gunnison River. The S-2 sample site is located at the <br />outlet of the culvert, prior to the confluence with the river. Because of the closure of the Sanborn <br />• Creek mine, and the termination of discharge Outfall point 011, the S-2 sample site was no <br />longer needed and, thus, eliminated from the OMLLC hydrologic monitoring program. (see TR- <br />45). <br />