Environmental Data

Temperature Data Loggers

Hobo U22 Data Logger (item on right) is deployed in water. The figure shows connections for uploading data to PC.

Hobo U22 Data Logger (item on right) is deployed in water. The figure shows connections for uploading data to PC.

Temperature data loggers are deployed at seven stations in Beaver Brook and Beaver Lake. These are recording temperatures in 30 minute increments 24 hours a day. Periodically the data is downloaded and stored in spreadsheets. The spreadsheets  are accessible through the map on the temperature data logger page.

Stream Visual Assessment Surveys

A stonefly larva, sign of a health stream.

A stonefly larva, sign of a healthy stream.

The Stream Visual Assessment Protocol (SVAP), developed by the U.S. Department of Agriculture’s National Resource Conservation Service, is a procedure designed for community groups to conduct a simple assessment of stream quality. The protocol includes assessments of stream geomorphology (e.g., how natural the channel is, absence of dams, stream bank stability), characteristics of stream specifically relevant to fish (e.g., hiding places in stream, vegetation canopy, barriers to fish passage), water quality (e.g., evidence of nutrient enrichment, optimal temperature range), and characteristics of stream relevant to the invertebrate food of fish (e.g., available habitats for invertebrates, types of invertebrates). Each characteristic is scored on a scale of 1-10 (usually). An average score is determined with the higher the score the better the stream assessment.

A stretch of Beaver Brook north of Old Shu Swamp Road and favorite hang out for brook trout. This needs to be surveyed!

A stretch of Beaver Brook north of Old Shu Swamp Road and favorite hang out for brook trout. This needs to be surveyed!

Thus far, with the help of Long Island Trout Unlimited and Friends of Oyster Bay volunteers, we have conducted one SVAP of a stretch of Beaver Brook south of Old Shu Swamp Bridge (map and results available through the SVAP page). The plan is to survey four additional areas of the stream. This should give us a comprehensive view of stream health throughout Beaver Brook. Conducting an SVAP is an excellent field experience for classrooms and school clubs. There is a short training session required. Please feel free to contact me about helping out!