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Products > Water Availability and use > Lakes and Reservoirs

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thumbnail Simulated Changes to Lake Maumelle Water Supply in Arkansas –USGS, in cooperation with Central Arkansas Water, developed hydrodynamic and water-quality models to examine the hydrology and water quality in the Lake Maumelle watershed and changes that might occur as the watershed becomes more urbanized and timber harvesting becomes more extensive. Lake Maumelle is the primary drinking water source for approximately 400,000 residents of Pulaski, Saline, and Grant Counties, Arkansas.  As the Lake Maumelle watershed becomes increasingly more urbanized and timber harvesting becomes more extensive, concerns about the sustainability of the quality of the water supply also have increased. (Full report; Technical Announcement)


thumbnail Hydrologic Datasets to Aid Water Management in the Upper Klamath Basin, Oregon –USGS, in cooperation the Klamath Tribes and in collaboration with Klamath Basin Rangeland Trust, Klamath Watershed Partnership, Sustainable Northwest, The Nature Conservancy, Upper Klamath Water Users Association, and U.S. Fish and Wildlife Service, has developed hydrologic datasets for the upper Klamath Basin of south-central Oregon that can help water managers identify and prioritize water uses that could be voluntarily set aside and reallocated to yield an additional 30,000 acre feet of water to Upper Klamath Lake. The datasets can be used by water managers to display the geographical distribution of evapotranspiration, sub-irrigation, water rights, streamflow statistics, and irrigation return flow in the upper basin—crucial information for understanding potential impacts of any changes in allocation. Used together, the datasets can help managers determine the relative benefits of retiring water uses and/or redirecting specific water rights to address water-resource issues specified in the Klamath Basin Restoration Agreement. (Full report; Technical Announcement)


thumbnail Reservoir Storage and Water-Quality Data Available for 59 Reservoirs throughout Texas –USGS, in cooperation with Texas Tech University, constructed a dataset of selected reservoir storage, reservoir elevation, and water-quality data from 59 reservoirs throughout Texas. The period of record for the data is as large as January 1965-January 2010. (USGS Data Series Report)


thumbnail Reservoir storage losses in Kansas –USGS, in cooperation with the Kansas Water Office, showed that two federal reservoirs in Kansas, which serve as a water supply to more than a third of the States' population, have been losing significant amounts of water storage capacity because of sedimentation. At least 95 percent of the sediment that flowed into Kanopolis Lake and Tuttle Creek reservoirs stayed in those reservoirs from October 2008 through September 2010. Kanopolis and Tuttle Creek reservoirs were built more than 50 years ago for water storage, flood control and recreation. USGS findings are expected to help the Kansas Water Office, which helps coordinate water planning in Kansas with the Kansas Water Authority, evaluate how best to manage sediment and slow down sedimentation in the reservoirs. (USGS Report; Press release; Article)


thumbnail Groundwater Storage and Recharge Ponds Successful in Stockton, California –USGS, in cooperation with the City of Stockton, assessed the feasibility of recharging underlying aquifers by infiltrating water through recharge ponds into the aquifer system. Stockton relies on groundwater for about 20 percent of its public supply, but water withdrawals have exceeded the amount of water naturally entering the aquifer system, resulting in declining groundwater levels. Using surface water and stormflow to recharge groundwater by infiltration through ponds can have beneficial effects on water quality. These benefits, including the removal of organic carbon and the decrease of microbiological contamination, allow for the recharge of aquifers using water with potentially impaired water quality, enabling groundwater managers to consider previously unusable sources for water supply. (Complete article)


thumbnail New methods for measuring reservoir storage capacity and sedimentation in Santa Cruz, California –A new report, done in cooperation with the City of Santa Cruz, presents a method of measuring the storage capacity and sedimentation of Loch Lomond Reservoir, Santa Cruz and shows promise to help water managers more effectively assess changes in water-storage capacity in similar basins with steep, narrow drainages in mountainous terrain. The method employs a combination of bathymetric scanning using multibeam-sidescan sonar, and topographic surveying using laser scanning. The techniques employed in the study help improve understanding of the quantitative effects of increased sedimentation rates on reservoir storage capacity. Understanding the resulting reductions in storage capacity can also help water managers more effectively adjust storage dynamically to prevent flooding.

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