Lenox Drive Vector Habitat Remediation Project
Groundwork San Diego-Chollas Creek was awarded a competitive grant by the County of San Diego Department of Environmental Health (DEH) under the Vector Habitat Remediation Program (VHRP) to construct the Lenox Drive Vector Habitat Remediation Project. In November 2017, construction began at Groundwork’s Lenox Drive VHRP project. Due to the proximity of human activities (residential and recreational/hiking), mosquitos are a problem in this area; the County of San Diego Department Environmental Health (DEH) has identified this site as a high priority treatment area (Site 1702). The site is immediately adjacent to a residential community and is a known mosquito breeding habitat. In addition to the residences, hikers would also be affected by mosquito breeding habitat in this section of Chollas Creek. This important project is a component of Groundwork San Diego’s overall watershed and water quality improvement program.
Within a couple of days, the creek went from looking like this:
To a smoothly graded channel free of the degraded concrete drop structures that had been causing water to pool and create habitat for mosquitos. This is what the site looked like on November 11, 2017 when grading was almost completed:
Next, the crew planted native vegetation according to the approved Habitat Restoration and Maintenance Plan. On November 28, 2017 planting was completed, and mulch was applied to prevent erosion as the plants grew in:
On January 9, 2018 the restored creek channel had its first test – a heavy rain resulted in significant water flow in the channel, and the results were excellent! Rapid flows were slowed by the rocks preventing scour and erosion that often occur in deteriorated urban creek systems.
A few days later when flow had gone down a bit, we could see a naturally meandering channel of water gurgling down the creek. Exactly what we were looking for in a healthy stream.
Federal Boulevard Restoration Project
Groundwork San Diego has been awarded a grant from the California Department of Water Resources through San Diego County’s Integrated Regional Water Management (IRWM) program to complete the planning phase for two projects in Chollas Creek. One project will remove invasive nuisance plants along portions of the creek, and the other will restore the portion of Chollas Creek that runs along Federal Blvd between I-805/Beradini Field and Home Ave. The Federal Blvd project will include removing the concrete channel and replacing with a soft bottom, planting native vegetation, and installing a trail along the edge of the creek. This is one of the important trail connections that will one day provide Chollas Creek Watershed residents a pedestrian/bicycle trail from La Mesa to the Bayshore Bikeway!