Oliver, Olin, and Martin Lakes Diagnostic Study Lagrange County, Indiana
Oliver, Olin, and Martin Lakes Diagnostic Study LaGrange County, Indiana October 16, 2009 Prepared for: Oliver and Martin Lakes Conservation and Improvement Association c/o Lynn Bowen 1155 E 455 S LaGrange, IN 46761 Prepared by: 708 Roosevelt Road Walkerton, Indiana 46574 (574) 586-3400 OLIVER, OLIN, AND MARTIN LAKES DIAGNOSTIC STUDY LAGRANGE COUNTY INDIANA EXECUTIVE SUMMARY Oliver, Olin, and Martin lakes are 391.9-acre, 101.4-acre, and 25.6-acre (158.6-ha, 41-ha, and 10.4-ha), natural lakes that lie in the southeast portion of LaGrange County, Indiana within the Oliver Lake-Little Elkhart Creek watershed (HUC 040500011506). Together, the lakes create the Oliver, Olin, and Martin (OOM) lakes watershed, which stretches out to the north and east of the lakes, encompassing approximately 6,856 acres (2,774.6 ha or 10.7 square miles). Water flows from Martin Lake to Olin Lake and into Oliver Lake before discharging out of Oliver Lake’s outlet in the southwest corner. Most of the OOM lakes watershed (~64%) is utilized for row- crop agricultural while approximately 16% of the watershed is utilized for hay or pasture. The remaining 20% of the watershed is divided among remnants of natural landscapes (~7%) composed of wetlands and forested areas, and residential and commercial developments (~4%). Open water including Oliver, Olin, and Martin lakes covers approximately 7% of the entire watershed. Water quality parameters and biotic metrics were assessed at four stream locations throughout the watershed. In general, the biological condition of the streams in the OOM lakes watershed is poor with the macroinvertebrate community being classified either “Impaired” or “Slightly Impaired” and the stream habitat being classified in the three of the four sites as “Non- supporting of aquatic life”.
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