The Vermont Department of Conservation (VT DEC) lists the Middlebury River as a Class B Cold Water Fishery that is suited for human uses including swimming, fishing and boating. The DEC has determined that the river is impaired by high bacterial counts along a two-mile impaired section near its mouth. Under Clean Water Act law, impaired waters must be cleaned up, whether through better land stewardship, stormwater management, or other measures.
Otter Creek Audubon River Watch, which has become folded into the Addison County River Watch Collaborative, began monitoring the Middlebury River in 1993. It became apparent in the mid-1990s that lower reaches of the Middlebury River, especially west of Route 7, had extreme pollution problems, the most acute being <em>E.coli</em> readings that sometimes exceeded state standards by ten or even twenty times.
In the late 1990s, a group of concerned citizens calling themselves the Middlebury River Watershed Partnership teamed up with the Otter Creek Natural Resources Conservation District to address pathogen levels in the lower Middlebury River. At the time there was strong concern that runoff from farm fields were polluting the river.
Since that time, some farmers in the area have put in place practices that reduce manure input to the river. Partly due to River Watch’s data that showed harmful pathogen levels in the 1990s, local Agriculture agents leveraged funding to fence out cows from waterways and give them other access to drinking water. Some nearby farmers also took measures to reduce nutrient runoff from their barnyards.
During the 2014-2015 stream-monitoring season, Addison County River Watch Collaborative is focusing on the Middlebury River and Otter Creek watersheds as intensive monitoring areas. As part of this year’s focus, the Collaborative is sampling for the first time the upper Middlebury River. The purpose of sampling <em>E.coli</em> as well as alkalinity and other parameters in these relatively pristine reaches of the river is to establish baseline information so we better know the condition of the upper Middlebury. It is possible that such data could lead to an official reclassification of those waters to a more protected status.
On August 28 and 29, 2011, Tropical Storm Irene pummeled the Green Mountains with three to seven inches of rain, causing many streams and rivers to rage through valleys, wiping out houses, roads and bridges. The Town of Middlebury went to work dredging the channel and armoring banks to protect roads and homes, but in the autumn of 2011, the Vermont Agency of Natural Resources and the U.S. Army Corps of Engineers found that the Town had violated laws that limit the altering of stream channels. Those laws exist in order to protect fish habitat and the small organisms that fish eat. Town officials at the time said they thought they had been complying with verbal permission that the State of Vermont had given them to do earthwork in the river.
The work the Town did after Irene proved to be controversial. Anglers and environmentalists drew attention to what they perceived as disruptive work in the river channel. Others in the community were concerned that the removal of sediment in the reach between the two town bridges might increase the force of the river as it heads into the Grist Mill Bridge flood wall.
U.S. Army Corps’s main goal after Tropical Storm Irene was habitat restoration while minimizing channel disturbance. In the fall of 2013, restoration was accomplished by replacing large native stones that were pushed to the side of the channel during post-Irene dredging back into the main flow in a random pattern in order to create meaningful amounts of habitat.
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Addison County Regional Planning Commission
14 Seminary Street, Middlebury, VT 05753
802-388-3141