Confluence has been retained to complete an irrigation water management study on Brown’s Gulch near Ramsay, Montana. The purpose of the study is to identify and assess the opportunities for increasing in-stream flows in lower Brown’s Gulch. Environmental goals are to improve fish habitat; mitigate water quality concerns such as temperature, nutrients, and siltation; and improve the efficiency and durability of the irrigation infrastructure. Confluence’s water resources engineer and project manager Ronda Burns, PE, will be collaborating with the private landowner, Watershed Restoration Coalition, the USDA Natural Resources Conservation Service, and private groups. Brown’s Gulch is a key tributary to Silver Bow Creek, part of the headwaters of the Clark Fork River.
Archive for June, 2010
Confluence has recently been retained by the Montana Department of Transportation (MDT) to carry out a three year term contract for performing wetlands monitoring on MDT’s wetland mitigation sites throughout Montana. Confluence’s Brian Sandefur, based in Bozeman, Montana, will be leading a team of 11 professionals to carry out annual wetland monitoring and reporting on MDT’s 23 wetland mitigation sites across the state. All wetland work tasks will be completed to fulfill U.S. Army Corps of Engineers requirements for documenting success of wetland construction at each site. Annual monitoring reports will be submitted to MDT and posted on their website. Sandefur has delineated and monitored thousands of acres of wetlands and has executed numerous successful mitigation plans. He is an effective team leader and works well with local, state, and federal agencies.
Confluence has been retained to quantify sediment loads from upland sources using GIS and Universal Soil Loss Equation (USLE) modeling strategies in the Boulder-Elkhorn TMDL Planning Area. Confluence has significant experience modeling sediment using GIS based USLE sediment models. We have successfully developed and implemented six watershed scale USLE models to characterize stream sediment: Upper Big Hole, Middle/Lower Big Hole, Jefferson River, Tobacco River, Lower Clark Fork, and Shields River. The models are used to characterize sediment loads and to establish potential load reductions in DEQ’s watershed planning process. DEQ will utilize the model to summarize the extent and effectiveness of existing and/or potential riparian buffer conditions as they relate to various sediment sources unique to land uses within the watershed. Various land use best management practices and other appropriate soil and water conservation practices will be developed.