about viewing, downloading, and printing report files can be found here. In contrast, McDowell Creek contributed about half of the phosphorus load to the reservoir, while inflows through Cowans Ford Dam contributed about one-fourth of the phosphorus load, and the McDowell Creek wastewater-treatment plant contributed about 15 percent of the total phosphorus load. External loadings of suspended solids, nitrogen, phosphorus, and biochemical oxygen demand were determined for May 1996-April 1997. The increased withdrawal rate may have some localized effects on circulation in the reservoir, but a more detailed model of the intake zone would be required to identify those effects. Water at all sites is sampled for E. coli and turbidity. the documents to your computer and open them with Adobe Reader. This year, donors have helped to fund urgent monitoring of beach closures during the COVID-19 pandemic, expand our support for volunteer water quality monitoring, and create groundbreaking data sharing resources for scientists. See the beach description for more information regarding their special status. Sampling season starts Memorial Day Weekend and ends Labor Day Weekend. However, the relatively large top-to-bottom differences in ammonia and phosphorus that have been observed in other Catawba River reservoirs were not present in Mountain Island Lake. The Mountain Island Education State Forest is the newest state forest supporting the mission of conserving natural resources and water quality, providing working forest demonstrations, and offering educational opportunities to the public. The root-mean-square difference between measured and simulated water temperatures was about 1 to 1.5 degrees Celsius, and vertical distributions of water temperature were accurately simulated in both the mainstem and coves. We depend on financial support from individuals and organizations to restore and protect access to water for all people. Bales, J.D., Sarver, K.M., and Giorgino, M.J., 2001, Mountain Island Lake, North Carolina; analysis of ambient conditions and simulation of hydrodynamics, constituent transport, and water-quality characteristics, 1996–97: U.S. Geological Survey Water-Resources Investigations Report 2001–4138, 85 p., https://pubs.er.usgs.gov/publication/wri014138. More information Together, the three lakes bordering Mecklenburg County hold about 465 trillion gallons of water. Mountain Island Lake is a relatively small (11.3-square-kilometer surface area) impoundment. Download the latest version of Adobe Reader, free of charge. However, the discharge has little effect on near-bottom water temperature. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter the efforts to curb the virus’ spread. The two-dimensional, laterally averaged model CE-QUAL-W2 was applied to Mountain Island Lake. South Atlantic Water Science Center - North Carolina Office. (PDF). Releases through Mountain Island Dam accounted for about 81 percent of outflows from the reservoir, while Riverbend Steam Station withdrawals, which were equal to discharge from the facility, constituted about 13 percent of the reservoir withdrawals. PDF documents opened from your Health As a result, dissolved-oxygen concentrations were only infrequently less than 4 milligrams per liter, and seldom less than 5 milligrams per liter throughout the entire reservoir, including the coves. U.S. Geological Survey Located near Huntersville, NC, this Charlotte, NC, lake is a cool 15 minute commute to Uptown Charlotte and only a few minutes from the US National White Water Center. Created by damming of the Catawba River in 1924, Mountain Island Lake generates hydro-electric power for nearby regions with the Mountain Island Hydroelectric Station. Climate Change Ecosystems Maintaining good water quality in Mountain Island Lake depends on maintaining good water quality in Lake Norman as well as in the inflows from the McDowell Creek watershed. Simulated water levels generally were within 10 centimeters of measured values, indicating a good calibration of the water balance for the reservoir. A beach is marked Green when single sample results are under 235 E.coli / 100 ML water. Because of the absence of the denitrification process in the model formulation, nitrate concentrations typically were overpredicted. As a general rule, if the water is clear, then E. coli levels are likely to be low. Based on model simulations, a proposed doubling of the water-supply withdrawals from Mountain Island Lake has no readily apparent effect on water quality in the reservoir. Mountain Island Lake - Mountain Island is sampled weekly from May 21st to September 10th. Please also contact us if you would like to volunteer to take water samples. USGS Water Science Centers are located in each state. Water begins flowing over the uncontrolled spillway of Mountain Island Dam. Passed water quality tests at least 95% of the time. As a result, dissolved-oxygen concentrations were only infrequently less than 4 milligrams per liter, and seldom less than 5 milligrams per liter throughout the entire reservoir, including the coves.

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