Water begins flowing over the uncontrolled spillway of Mountain Island Dam. 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. Increased loadings from Cowans Ford Dam had about the same effect on water-quality conditions near Mountain Island Dam as did increased loadings from McDowell Creek. Practicing social distancing is essential right now. USGS Water Science Centers are located in each state. Rozzelle’s family goes back to the 1700s on the Catawba River. Water at all sites is sampled for E. coli and turbidity. The root mean square of the difference between measured and simulated dissolved-oxygen concentrations was about 1 milligram per liter. 1973-2014 Historical Review of the Water Quality of Rhodhiss Lake, North Carolina, with Emphisis on Nutrient Loading and Export (Plublished February 2017 by Jon Knight, PhD, for Carolina Land & … Download the latest version of Adobe Reader, free of charge. 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 01-4138, 85 p. USGS Home 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. 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. In addition, the reservoir receives treated effluent from a municipal wastewater-treatment facility. See Legal. The model was configured to simulate water level, water temperature, and 12 water-quality constituents. 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. browser may not display or print as intended. The U.S. Geological Survey, in cooperation with the Charlotte-Mecklenburg Utilities, conducted an investigation of the reservoir to characterize hydrologic and water-quality conditions and to develop and apply a simulation model to predict the response of the reservoir to changes in constituent loadings or the flow regime. 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. Samples are collected on Wednesday or Thursday each week, and results are posted on Thursday or Friday. More information Together, the three lakes bordering Mecklenburg County hold about 465 trillion gallons of water. Ecosystems Red means the water at the site has water quality issues or there is an emergency. A beach is marked Red when the results are equal to or above 235 E.coli / 100 ML water. We may manually set the status for a specific beach if we have concerns about the sampling protocol, if there is an emergency, if monitoring practices don't exist or have recently changed, or other reasons that render this site "special.". Seasonal and spatial patterns of nitrate, ammonia, orthophosphorus, and chlorophyll a were reasonably reproduced by the water-quality model. The two-dimensional, laterally averaged model CE-QUAL-W2 was applied to Mountain Island Lake. High levels of E. coli indicate a health risk for people swimming in the water. 100: Full pool. LockA locked padlock There are 43 active homes for sale in Mountain Island neighborhood, which spend an average of 51 days on the market. Holly Water Plant. During 1996–97, flows into Mountain Island Lake were dominated by releases from Cowans Ford Dam on Lake Norman, with more than 85 percent of the total inflow to the reservoir coming from Lake Norman. 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. In the mainstem of the reservoir, near-bottom ammonia concentrations occasionally were greater than near-surface concentrations. Because of the absence of the denitrification process in the model formulation, nitrate concentrations typically were overpredicted. U.S. Geological Survey United States. Overall, E. coli levels in the Catawba lakes are low, and the reservoirs are typically safe for swimming. Climate Change Swim Guide, "Swim Drink Fish icons," and associated trademarks are owned by SWIM DRINK FISH CANADA. Green means the beach passed water quality tests 95% of the time or more. Fish Consumption Advisories Blue Catfish Channel Catfish Largemouth Bass Health to protect citizens from exposure to contaminantslike PCBs and mercury. Yellow means the beach passed water quality tests 60-95% of the time. Red means the beach failed water quality tests 40% of the time or more. However, the discharge has little effect on near-bottom water temperature. An area of 181 square kilometers drains directly to the reservoir, but much of this area is undergoing development. For more information, please visit the World Health Organization public resource on COVID-19. External loadings of suspended solids, nitrogen, phosphorus, and biochemical oxygen demand were determined for May 1996-April 1997. The root mean square of the difference between measured and simulated dissolved-oxygen concentrations was about 1 milligram per liter. Green means the beach has historically excellent or pristine water quality, but there is no current data. Simulations suggest that dissolved material can move upstream in the reservoir when flows from Cowans Ford Dam are near zero. Follow the advice of the health experts. Mountain Island Lake is part of the Catawba River watershed that delivers Charlotte with its drinking water source. Strong thermal stratification was seldom observed in Mountain Island Lake during April 1996-September 1997. 2001-4138, Prepared in cooperation with the Charlotte-Mecklenburg Utilities, Explore recent publications by USGS authors, Browse all of Pubs Warehouse by publication type and year, Descriptions of US Geological Survey Report Series, Mountain Island Lake, North Carolina; analysis of ambient conditions and simulation of hydrodynamics, constituent transport, and water-quality characteristics, 1996–97, Simulation of hydrodynamics and material transport.