Spofford Lake Association

Water Quality 


VLAP biannual report of Spofford Lake's water quality is attached below.  This is based on on water samples taken during each of the summer months by Spofford Lake Association volunteers and by data collected periodically by DES.

As you can see, the lake's Phosphorus and Chlorophyll-a levels are good but the Dissolved Oxygen (D.O.) levels are 'bad'. This is unusual as these three measurements generally move together. DO levels and temperature patterns "influence lake productivity, physical properties, phosphorus cycling and fish and aquatic animal populations. Lower 'Dissolved Oxygen' levels can lead to impaired breakdown of organic matter in bottom sediments.

A major objective of the Spofford Lake Steering Committee's work is to learn what is causing these low D.O. levels and define ways to, at least, arrest its decline.

The Lake's higher' Conductivity' "may indicate pollution from such sources as road salting (and) septic systems...".  

 Take time to understand the Lake's vulnerabilities and think about what steps you might take (or not take) to help maintain and improve Spofford Lake's water quality.