Little Sand Lake Water Quality Report Little Sand Lake is one of the cleanest and clearest lakes in Minnesota. Water quality data has been collected since 1988. The LSLAA is a leader in our area and plays a significant role in monitoring and maintaining the lake. 20 year water trends Little Sand Report 2017 Little Sand DO-Temp 2017 Little Sand and Big Sand_Dissolved Oxygen (DO) Temp Monitoring (Update April 2018) 11 Years of Dissolved Oxygen (DO) Temperature Sampling (updated Feb. 2018) RMB Environmental Laboratories Report