Big Sand Lake Association - Hubbard County, Park Rapids, MN - original logo design by Marcia Bergland

Big Sand Lake Association

committed to the preservation of Big Sand Lake

Water Quality Reports

The Big Sand Lake Association (BSLA) is dedicated to the preservation and stewardship for the waters of Big Sand Lake. One of the Association’s first accomplishments in this effort was a fly over of Big Sand to assess any source of pollution coming into the lake. This action resulted in Big Sand Lake becoming the first Hubbard County lake with 100% of its septic systems upgraded and compliant with county standards and is likely the reason for the amazing water clarity we now enjoy.


BSLA also participates in the MN Pollution Control Agency’s (MPCA) Citizen Lake Monitoring Program by recruiting Big Sand volunteers to participate. Testing and monitoring activities are financed through membership dues and grants. Many BSLA members have volunteered hours of their time to test, monitor and track conditions over the years.


Water samples are collected monthly during the season by a Big Sand volunteer for levels of chlorophyll and phosphorus and water transparency (Secchi disc) readings are recorded. The data is sent to RMB Environmental Laboratories (RMBEL) in Detroit Lakes for analysis and tracking. RMBEL compiled and published a 5-year summary of the analytical information first in 2012 and again in 2017. Click on the links below for those summaries and other Big Sand information.

Summary water quality data and statistics for Big Sand can also be found on the following websites:

Additional BSLA Monitoring Activities:

In addition to the above, BSLA has participated in three other vital monitoring activities: Zebra Mussel Veliger testing, a Dissolved Oxygen (DO) / Water Temperature study in collaboration with the DNR, and Vegetative Mapping. Click on the buttons at the top of this page for a description and results of these monitoring activities.


Charitable Lake Fund

Learn More About the Big Sand Charitable Lake Fund

View Details Here

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