Water Monitoring

The Water Monitoring Program was designed to quickly identify water quality changes and problems through regular measurement.  The Water Monitoring program consist of two different Activities;  Water Sampling and Water Testing

Water Sampling

Water samples and values are collected at six stations strategically located around Silver Lake every other week during the warmer months. Additionally, a team from the fresh water biology group at the University of New Hampshire visits Silver Lake annually for more extensive testing.

Data concerning water temperature, water clarity, lake stratification, chlorophyll content, phosphorus level and acidity (ph) are collected and analyzed. This data forms the basis of an extensive annual report and comparative evaluation.

The monitoring is done by a group of volunteers (often a husband and wife team). Each team devotes approximately three hours per year to the effort. 

If you would like to join this group, please fill out our volunteer form.

SLAM Water Sampling Calendar

Water Sampling Locations

Water Testing

Water samples of Silver Lake’s surface layer are gathered and tested every two weeks from June through September.  The testing team of at least two people need to develop a system for consistency and efficiency, so it should be a dedicated team for a period of time.  It could be split between two teams covering 4 test weeks each.


Six water samples are tested for pH, alkalinity and chlorophyll.   The process takes 1.5 to 3 hours, depending on how efficient you are.  There are two tubs of equipment associated with the three tests.  It helps to have space to activate the “lab” of equipment in a controlled environment for a testing session’s period of time and room to store it after.  The ability to freeze small sample bottles is required as well.


The testing schedule is dependent upon the water sample gathering.  The testing needs to be completed within 24 hours of the sample gathering.  Flexibility is key to this volunteer position.  It also requires steady hands and good eyesight.  When the testing is done, the sample bottles need to be rinsed, dried and delivered to the next team.  Collect the data sheets and frozen samples to be picked up at intervals by UNH. 


If you would like to join this group, please fill out our volunteer form.