Estimating ground water discharge by hydrograph separation

Iron Mountain is located in the West Shasta Mining District in California. An investigation of the generation of acid rock drainage and metals loading to Boulder Creek at Iron Mountain was conducted. As part of that investigation, a hydrograph separation technique was used to determine the contribution of ground water to total flow in Boulder Creek. During high-flow storm events in the winter months, peak flow in Boulder Creek can exceed 22.7 m3/sec, and comprises surface runoff, interflow, and ground water discharge. A hydrograph separation technique was used to estimate ground water discharge into Boulder Creek during high-flow conditions. Total ground water discharge to the creek approaches 0.31 m3/sec during the high-flow season. The hydrograph separation technique combined with an extensive field data set provided reasonable estimates of ground water discharge. These estimates are useful for other investigations, such as determining a corresponding metals load from the metal-rich ground water found at Iron Mountain and thus contributing to remedial alternatives.     

第30届国际地质大会工作近况

第３０届国际地质大会工作近况本届大会将以大陆地质为主题进行学术活动。重点研讨与大陆地质有关的地质构造演化、能源矿产、矿产资源、地质环境保护、地质灾害防治以及地球科学与人类生存和可持续发展的关系等问题。大会学术计划委员会经过与国内、外学术组织、专家磋商...