3.2 Water Quantity

  1. Dutch Lake currently experiences fluctuations in water levels due to beaver dams and other obstructions to the outlet.
  2. Drainage is conveyed through the subwatershed through a series of culverts that should be evaluated, monitored, and replaced or repaired as necessary to maintain conveyance, minimize erosion, minimize hydrologic bounce, and maintain adequate water levels in lakes and wetlands.  Of specific concern is the Game Farm Road culvert between DL-6 and DL-7 (west of Highway 110). 
  3. The HHPLS identified one location where the minimum freeboard requirement was not met for the 100 year event: the Game Farm Road culvert between DL-6 and DL-7 (west of Highway 110).  More detail is available in the HHPLS.  Local plans should identify this potential location and assess whether the risk of occasional flooding is acceptable or should be addressed.
  4. Development, redevelopment, and reconstruction in the subwatershed are predicted to increase nutrient and TSS loads from the watershed as well as increase the volume of stormwater runoff.
  5. Future development could increase the volume and velocity of discharges conveyed by Dutch Creek.