Pima County Government Logo
  • Increase font size
  • Decrease font size
  • Print
  • RSS
  • New Flood Control District habitat restoration work at Canoa Ranch

    Apr 07, 2020 | Read More News
    Share this page
    As part of a larger habitat restoration program in cooperation with the U.S. Army Corps of Engineers, the Flood Control District is restoring riparian and aquatic habitat at Canoa Ranch with the goal of increasing the biodiversity and providing wildlife corridor connections in the Santa Cruz Valley. fly

    The completed habitat projects will serve as mitigation for development projects that impact Federally protected watercourses. 

    Construction on the newest project, a 7-acre pollinator garden, is expected to begin in March. The pollinator garden is designed to support native pollinators (bees, butterflies, birds, and bats).  More than 30 plant species are planned for the pollinator garden, including native wildflowers (such as milkweed, Arizona foldwing, brittlebush,  Gregg’s Mist, desert senna, and penstemmon) and native grasses (such as Arizona cottontop, sideoats grama, green sprangletop), as well as velvet mesquite and desert willow trees. 

    The goal of the overall restoration work is to restore natural riverine functions within Canoa Ranch.  Restoring natural floodplain functions will improve aquatic resources and reduce habitat fragmentation along the upper Santa Cruz River. Engineering designs utilizing natural materials designed to work with water flows will create self-sustaining seasonal pools and micro habitats within the river channel. 

    The resulting sand or gravel bars will create areas of increased deposition & soil moisture, areas of shallow perched water, and associated scour pools. These features will help restore a naturally functioning river with associated healthy habitat. Habitat types on the overbank portion of the restoration area will include mesquite woodland, riparian shrub and riparian grassland habitats.