The Wrack

The Wrack is the Wells Reserve blog, our collective logbook on the web.

Post-Restoration Fish Habitat Monitoring for Shoreys Brook

Posted by | March 2, 2012

Goal

Determine the presence or absence of diadromous rainbow smelt and appropriate habitat within the restored area of Shoreys Brook

Project Period

March and April 2012

Activities

Habitat Assessment — Determine extent of tidal flooding and tidal incursion, identify potential spawning substrate, measure water quality and water velocity

Site Passability — Measure water velocity and water depth

Fish Use — Fish with fyke net, survey for eggs, visually search for fish at night

Product

Monitoring of Post-Restoration Habitat Conditions in Shorey's Brook, December 2012 (1MB)

Conclusions

(taken from above report)

Habitat conditions in Shorey's brook are in a state of fluctuation as the restored stream channel carves its way through the formerly impounded sediment. Future culvert replacement work at the Route 101 crossing may influence sediment regimes in the downstream restored area. It may take a period of several years before significant spawning substrates will emerge from the restored stream bottom. As the new channel forms, cascades that currently create velocity and elevation barriers for smelt may migrate upstream or disappear entirely, enabling access to additional habitat. With smelt already utilizing downstream habitat, there is potential for these fish to utilize emerging habitat in the restored reach of the brook.

Potential sources of habitat degradation do exist in Shorey’s Brook, including sedimentation, eutrophication, tidal influence, and low flows, which could contribute to increased smelt egg mortality.

Partner

Great Works Regional Land Trust

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