Integrated Pest Management for Stormwater Assets

The IPM Sub-Committee for Stormwater Assets consists of three members of the City's Natural Resources Board, three local scientific advisers, and three members of City Staff. Their goal is to create an IPM Plan that will apply to all pest management activities within the City's stormwater conveyance system It is the goal of the Sub-Committee to assist City Staff in developing a plan to control pests so that the treatment, transportation, and storage capacity of the entire conveyance system is preserved, while also ensuring the health and safety of staff, residents, structures, wildlife, and the surrounding natural waterways.

Aquatic Weed Poster

Poster Key


  1. Alligatorweed (Alternanthera philoxeroides) – an invasive, emersed plant native to South America
  2. Water lettuce (Pistia stratiotes) – an invasive, free-floating plant
  3. Torpedograss (Panicum repens) – an invasive, wetland grass native to Africa, Asia, Europe
  4. Water hyacinth (Eichhornia crassipes) – an invasive, free-floating plant native to Brazil
  5. Giant salvinia (Salvinia molesta) – an invasive, floating plant native to South America
  6. Hydrilla (Hydrilla verticillata) – an invasive, submersed plant native to Africa, Asia, and Europe
  7. Largemouth bass (Micropterus salmoides)- a native freshwater fish
  8. Yellow-bellied slider (Trachemys scripta scripta) - a native aquatic turtle
  9. Alligatorweed flea beetle (Agasicles hygrophila) – a biological control agent introduced to control alligatorweed
  10. Dragonfly – a beneficial native insect that eats mosquitos
  11. Dragonfly nymph – a casing after emergence
  12. Mosquito – an insect pest that can harm humans and animals; it can breed beneath dense aquatic weed infestations