. Alewife Reservation & Alewife Brook master plan. Wetlands; Wetland conservation. 5. Restore the historic railing on both sides of the brook and repair the con- crete retaining wall where necessary. Area 8: Alewife Brook Between Broadway and the Mystic Valley Parkway Existing Conditions and Key Challenges This section of Alewife Brook is a natural channel composed of mostly unconsolidated muck. In a few locations stream bank erosion is occurring or appears imminent. In-stream habitat structure is formed by woody debris, and spawning herring have been observed near the confluence of the Al
. Alewife Reservation & Alewife Brook master plan. Wetlands; Wetland conservation. 5. Restore the historic railing on both sides of the brook and repair the con- crete retaining wall where necessary. Area 8: Alewife Brook Between Broadway and the Mystic Valley Parkway Existing Conditions and Key Challenges This section of Alewife Brook is a natural channel composed of mostly unconsolidated muck. In a few locations stream bank erosion is occurring or appears imminent. In-stream habitat structure is formed by woody debris, and spawning herring have been observed near the confluence of the Alewife Brook and the Mystic River. Two dozen storm drains dis- charge into this section of the brook, which is fenced along its entire length. Most of the western (Arlington) bank is cov- ered by a dense stand of Japanese knotweed, alongside which a dirt path runs and into which some encroachments intrude. The east- ern (Somerville) bank is also covered by knot- weed, except in the Dilboy Field area where recreational infrastructure and a parking lot front onto the water, severing the dirt path in the process. A wide swath of parkland exists here. Several encroachments are located across the tree-lined Alewife Brook Parkway, along the east side of the Parkway in Somerville. The confluence of the two waterways repre- sents a major gateway to the Alewife Brook Greenway in that there are potential connec- tions with recreational trails along the Mystic River Reservation. The Mystic River begins at the Lower Mystic Lake on the Arlington/ Medford town border and runs southeastwards into Boston Harbor. Two sites of cultural importance are found here — the permanent overwintering campsite of Native Americans at the confluence, and the putative location of another Native village site across from Dilboy FIGURE 63. This open area on the west side of Alewife Brook will serve as a connection node between the Alewife Brook and the Mystic River Reservation. Recommendations 1. Stabil
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