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Dissolved material can remain in Mountain Island Lake for a period far in excess of the theoretical retention time of 12 days. Here are few communities surronding Mountain Island Lake. World Health Organization public resource on COVID-19. In addition, the reservoir receives treated effluent from a municipal wastewater-treatment facility. Grey means there is no current water quality information, the beach is under construction, there has been an event that has rendered water quality information unreliable or unavailable. Practicing social distancing is essential right now. About Mountain Island Educational State Forest. An area of 181 square kilometers drains directly to the reservoir, but much of this area is undergoing development. ) or https:// means you’ve safely connected to the .gov website. Grey means water quality information for the beach is too old (more than 7 days old) to be considered current, or that info is unavailable, or unreliable. Mountain Island Lake is a relatively small (11.3-square-kilometer surface area) impoundment. Simulated and measured ammonia concentrations seldom differed by more than 0.01 milligram per liter, and simulations of seasonal fluctuations in chlorophyll a were representative of measured conditions. The remainder of the phosphorus loadings came from Gar Creek and the discharge from the Riverbend ash settling pond. 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. About 5.5 percent of the withdrawals from the reservoir were for water supply. Nevertheless, the highest chlorophyll a concentration measured during the study was 13 micrograms per liter—well below the North Carolina ambient water-quality standard of 40 micrograms per liter. 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. A lock ( 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. Privacy The Riverbend Steam Station thermal discharge had a pronounced effect on surface-water temperatures near the outfall. For more information visit: stormwater.charmeck.org Current Month Bacteria Results Site Date Fecal Coliform (col./100 ml) E. Coli North Carolina Web Development Team These results were posted to Swim Guide on September 6th, 2020 at 8:29 PM. An official website of the United States government. Fish Consumption Advisories Blue Catfish Channel Catfish Largemouth Bass Health to protect citizens from exposure to contaminantslike PCBs and mercury. Stay alert and check for other swimming hazards such as dangerous currents and tides. In general, dissolved material entering Mountain Island Lake from both Cowans Ford Dam and McDowell Creek during the summer moves along the bottom of the lake toward Mountain Island Dam, with little mixing of dissolved material into the surface layers. Because of the absence of the denitrification process in the model formulation, nitrate concentrations typically were overpredicted. The effects of a 20-percent increase in water-chemistry loadings through Cowans Ford Dam and from McDowell Creek were simulated separately. South Atlantic Water Science Center - North Carolina Office. This sample data provides a general guide to the health of the waterway and should only be used for informational purposes. In general, dissolved material entering Mountain Island Lake from both Cowans Ford Dam and McDowell Creek during the summer moves along the bottom of the lake toward Mountain Island Dam, with little mixing of dissolved material into the surface layers. The two-dimensional, laterally averaged model CE-QUAL-W2 was applied to Mountain Island Lake. Holly Water Plant. Basic water chemistry (pH, DO, temp, conductivity) is monitored at some sites. The calibrated water-quality model was applied to evaluate (1) the movement of a conservative, neutrally buoyant material, or tracer, through the reservoir for several sets of conditions; (2) the effects of the Riverbend thermal discharge on water temperature in the reservoir; (3) the effects of changes in water-supply withdrawal rates on water-quality conditions; and (4) changes in reservoir water quality in response to changes in point- and nonpoint-source loadings. Mountain Island Lake is part of the Catawba River watershed that delivers Charlotte with its drinking water source. 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. Red means the beach failed water quality tests 40% of the time or more. Water A beach is marked Red when the results are equal to or above 235 E.coli / 100 ML water. Lake Intended Uses. Please contact the Catawba Riverkeeper at Brandon@catawbariverkeeper.org if you have questions. Managed by Charlotte-based company, Duke Energy, this lake provides drinking water to … Catawba Riverkeeper Foundation updates the status of this beach as soon as test results become available. Green means the beach’s most recent test results met relevant water quality standards. 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. Join the Swim Guide community today. 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. Nevertheless, the highest chlorophyll a concentration measured during the study was 13 micrograms per liter-- well below the North Carolina ambient water-quality standard of 40 micrograms per liter. Mountain Island Lake is an impoundment of the Catawba River in North Carolina and supplies drinking water to more than 600,000 people in Charlotte, Gastonia, Mount Holly, and several other communities. Water at all sites is sampled for E. coli and turbidity. Share sensitive information only on official, secure websites. 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. Sampling season starts Memorial Day Weekend and ends Labor Day Weekend. When swimming season is over or when a beach's water quality data has not been updated frequently enough (weekly) it goes into historical status. Samples are collected on Wednesday or Thursday each week, and results are posted on Thursday or Friday. 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.". The model was configured to simulate water level, water temperature, and 12 water-quality constituents. Simulated and measured ammonia concentrations seldom differed by more than 0.01 milligram per liter, and simulations of seasonal fluctuations in chlorophyll a were representative of measured conditions. U.S. Geological Survey Red means the beach’s most recent test results failed to meet water quality standards. An area of 181 square kilometers drains directly to the reservoir, but much of this area is undergoing development. Strong thermal stratification was seldom observed in Mountain Island Lake during April 1996-September 1997. Follow the advice of the health experts. Mountain Island Lake - Mountain Island is sampled weekly from May 21st to September 10th. FOIA 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 effects of a 20-percent increase in water-chemistry loadings through Cowans Ford Dam and from McDowell Creek were simulated separately.

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