Last Friday we conducted a prescribed burn at Gallagher Creek Park. Located near the headwaters of Gallagher Creek, this park protects our important water resources in our township. Notably, Gallagher Creek is home to a remnant population of native brook trout. In addition to stimulating the native plant communities at this park, the prescribed burn was part of our Phragmites control program (along with appropriate Michigan DEQ approved chemical control). We hope that managing for healthy native plant communities in the wetlands around the creek will help keep Gallagher Creek itself healthy.
Surveys of the brook trout have been done by the Michigan Department of Natural Resources (DNR, formerly DNRE) in 1990, 1998, and 2010. The Southeast Michigan DNR Fisheries Newsletter from January 2011 provides this summary of what we know about the brook trout in Gallagher Creek:
Gallagher Creek is a small, coldwater stream originating just south of the Bald Mountain Recreation Area in central portion of eastern Oakland County. It flows in a northeasterly direction and empties into Paint Creek at Orion Road in the Village of Goodison. The creek flows through private land; there is no public access. This stream is home to one of the few remaining self-sustaining brook trout populations in southern Michigan. There were concerns that habitat quality had degraded due to sediment and nutrient inputs from erosion and runoff associated with development in the watershed. A survey in 1998 indicated that runoff from construction sites in the area was responsible for depositing sediment in the gravel riffles and natural pools formerly present in the stream. Previous surveys of this stream in 1990 and 1998 produced brook trout densities of 300 trout per mile. In 1992, mottled sculpin were trapped and transferred from Johnson Creek in Wayne County to Paint Creek as a prey item for trout. The sculpin had managed to expand their populations into the lower stretches of Gallagher Creek by 1998. This survey was conducted to evaluate the status of brook trout in Gallagher Creek. We captured a total of 7 brook trout from 6 to 7 inches and 1 brown trout at 3 inches. The brook trout density found in this survey was about 50 per mile, down from 300 per mile in 1990 and 1998. This decline in abundance is likely due to siltation of the stream from the development along the creek. Mottled sculpin have expanded their range even further upstream from 1998. We also captured blacknose dace during the survey. The presence of these two species indicates that the water quality is still good, but the heavy siltation is hampering the brook trout’s ability to reproduce.
Does our natural heritage, a special population of brook trout in this case, need to be sacrificed for the sake development? Or can we be smart with our development, designing systems that protect the stream by filtering runoff to capture silt and other pollutants?
Be part of the solution! Install a rain garden with native plants to capture the runoff from your roof and driveway before it enters our wetlands and streams. Plant a native plant buffer next to the wetland or stream that runs through your property. We have very special natural features in our township, and we all need to pitch in so that future generations can enjoy more than just stories about “the way it used to be.”