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Underscoring NOVA Parks’ neglect of Upton Hill Park are storm water runoff and erosion problems at N. Longfellow Street seemingly ignored by NOVA Parks’ management for years. We strongly urge NOVA Parks and Arlington County to reduce the storm water runoff here to prevent more damage.
Underscoring NOVA Parks’ neglect of Upton Hill Park are storm water runoff and erosion problems at N. Longfellow Street seemingly ignored by NOVA Parks’ management for years. We strongly urge NOVA Parks and Arlington County to reduce the storm water runoff here to prevent more damage.
Arlington County's 2007 Natural Resource Inventory of Upton Hill Regional Park highlighted the danger storm water flow from N Longfellow Street posed to the sensitive wetlands in the NE corner of the park:
Arlington County's 2007 Natural Resource Inventory of Upton Hill Regional Park highlighted the danger storm water flow from N Longfellow Street posed to the sensitive wetlands in the NE corner of the park:
In two areas, uncontrolled storm water flow threatens the integrity of the wetland. From the southeast, originating from the neighborhood at the top of slope [Longfellow Street], storm water sheetflow enters the park and flows by gravity down a series of drainage ravines, some of which appear to have been created by storm water flow. During periods of high water flow (thunderstorms), an increased volume of water flowing at high intensity is compounding the problem by downcutting the ravines. To the west of the wetland, storm water enters the wetland head from the paved service road, open playground area, and from the newly constructed outboard berm along the paved commuter trail. During high rain events, it was observed that a high volume of silt-laden water (orange color) was flowing directly into the top of the wetland. Without some form of remediation, the clean, cobble and sand covered stream beds downstream are in danger of being irreparably covered with successive layers of silt.
In two areas, uncontrolled storm water flow threatens the integrity of the wetland. From the southeast, originating from the neighborhood at the top of slope [Longfellow Street], storm water sheetflow enters the park and flows by gravity down a series of drainage ravines, some of which appear to have been created by storm water flow. During periods of high water flow (thunderstorms), an increased volume of water flowing at high intensity is compounding the problem by downcutting the ravines. To the west of the wetland, storm water enters the wetland head from the paved service road, open playground area, and from the newly constructed outboard berm along the paved commuter trail. During high rain events, it was observed that a high volume of silt-laden water (orange color) was flowing directly into the top of the wetland. Without some form of remediation, the clean, cobble and sand covered stream beds downstream are in danger of being irreparably covered with successive layers of silt.
At the end of N. Longfellow Street, storm-water runoff from the street runs straight through a short pipe, spilling directly down the hillside. An eroded gully has developed over the years due to the increasing volume and speed of the runoff. The water flows to the NE to the sensitive wetlands in the NE part of the park indicated in purple from the 2007 Arlington County Natural Resource Inventory of Upton Hill Regional Park.
December 29, 2019 storm water run off from Longfellow St going down eroded channel.
December 29, 2019 storm water run off from Longfellow St going down eroded channel.
Dec 24, 2020. Storm water runoff pouring down the hillside from N. Longfellow St. Storm water has eroded a channel through the path necessitating the construction of a wooden bridge.
Dec 24, 2020. Storm water runoff pouring down the hillside from N. Longfellow St. Storm water has eroded a channel through the path necessitating the construction of a wooden bridge.
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