. Alewife Reservation & Alewife Brook master plan. Wetlands; Wetland conservation. be incorporated in this area as well, such as a feature creating a visual con- nection between the Little River and Alewife Brook that disappears here under Route 2 (see Figure 56). Area 6: Alewife Brook Between Route 2 Rotary and Henderson Bridge Existing Conditions and Key Challenges This section of Alewife Brook flows within a concrete trapezoidal channel that is bordered by a chain-link fence, trees, and shrubs, includ- ing the invasive Japanese knotweed. Aquatic habitat structure is poor given the absen
. Alewife Reservation & Alewife Brook master plan. Wetlands; Wetland conservation. be incorporated in this area as well, such as a feature creating a visual con- nection between the Little River and Alewife Brook that disappears here under Route 2 (see Figure 56). Area 6: Alewife Brook Between Route 2 Rotary and Henderson Bridge Existing Conditions and Key Challenges This section of Alewife Brook flows within a concrete trapezoidal channel that is bordered by a chain-link fence, trees, and shrubs, includ- ing the invasive Japanese knotweed. Aquatic habitat structure is poor given the absence of a natural substrate that can support in-stream plants. However, the abutting cattail marsh (now colonized by common reed) is home to many birds. Residences along the Arlington side of the Ale- wife Brook experience frequent flooding, pos- sibly exacerbated by the hydraulic constriction of the bridge culvert at Massachusetts Avenue. Some encroachments exist here. There are also a dozen stormwater outfalls and two combined sewer outfalls. This area is a major gateway to the Alewife Brook Greenway, where the well-used Minute- man Bicycle Trail crosses from Cambridge to Arlington, on its way to Lexington. A low-use dirt trail, often overgrown with grasses, winds. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bioengineering Group; Massachusetts. Metropolitan District Commission; Carol R. Johnson & Associates. [Salem, Mass. ] : The Bioengineering Group
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