3.5 Groundwater

  1. As described in Section 2.5.6 and Figure 16, Figure 17, and Figure 18, there are a number of areas in the subwatershed that are very highly or highly sensitive to aquifer impacts.
  2. Wellhead Protection Areas and associated Drinking Water Sensitivity Management Areas have been identified for the cities of Long Lake and Plymouth.  Stormwater management within those areas should be coordinated with wellhead protection plans.
  3. Many of the major wetlands in the subwatershed were identified in the FAW as discharge or combination recharge-discharge wetlands.  Several recharge wetlands are located in the western subwatershed north of Highway 12 and west of Willow Drive.  As development occurs it will be critical to maintain runoff and infiltration rates to help maintain hydrology to these wetlands.
  4. Groundwater hydrology is an important component in the base flow for area streams.  Protecting existing groundwater flow regimes must remain a priority.