Large Scale Lake Planning
Long Lake, Shawano County, Wisconsin is a small (86 acre) lake with a relatively large and predominantly open/agricultural watershed. Nutrient levels were near those expected (relatively high) for the ecoregion in which Long Lake is located and transparency was low. Water quality parameters, according to Trophic state Index, indicated late mesotrophic to eutrophic conditions. Nutrient levels in surface runoff were much higher than in-lake readings. Aquatic plant populations appeared to benefit the resource; plants on muck substrates near the inlet were more abundant and of a different species assemblage than on sandy substrate areas. Recreational use, as indicated by survey responses, was moderate and largely restricted to landowners along the highly developed shoreline. Fifteen respondents were permanent residents; average use among seasonal residents was about 12 weeks and 22 weekends. Viewing/watching nature, swimming and sunbathing, and fishing were the most popular activities. Ninety-four watercraft were reported; these were predominantly rowboats but included a significant number of motorboats over 50 horsepower. Most respondents did not perceive crowding or safety problems. Water quality was generally perceived to be fair to poor and unchanged or deteriorated over the past five years. Thirty-seven respondents indicated having 30 conventional septic tanks, 4 holding tanks and 3 outhouses. Management recommendations emphasize continued monitoring, reduction of nonpoint source nutrient and sediment inputs and consideration of access development. - Water quality and self-help monitoring should be continued to supplement the small amount of historic information and track trends. Event monitoring should be continued and supplemented with local rainfall data; control measures should be implemented where appropriate and practical. - Good yard management, runoff control practices and proper sanitary system maintenance should be emphasized. An onsite survey of sanitary systems should be scheduled during summer months. Best Management Practices (BMPs) should be adopted on erosion prone areas throughout the watershed. - Consideration should be given to access development. Lake management activities are often facilitated through state assistance and highest priorities are often given to waterbodies with adequate public access.
Assemble and review data, identify gaps in data, initiate water monitoring program, monitor agriculture-related nonpoint source loads. Prepare an evaluation of lake's water quality. Prepare a base map of the lake and its watershed. Design and distribute a survey to lakesure residents. Assessment of opportunities for future public access. Draft final report.
Lake Management Plan Development
Data analysis, report production
Watershed Mapping or Assessment
Social Survey of Residents or Users
Monitor Water Quality or Sediment