3.2 Water Quantity
- Drainage is conveyed through the subwatershed through County Ditch
#15 as well as other channels to Gleason
Lake. The HHPLS channel erosion survey on Ditch #15
identified five erosion locations, including two that were of a high level of
concern. Gleason Lake
outlets through Gleason Creek, and the Upper
Watershed Stream Assessment
identified five erosion locations on Gleason Creek.
- The HHPLS identified a number of ponding locations that
are predicted to overtop during the 100-year event, as well as others with a
minimal amount of freeboard. More detail
is available in the HHPLS.
- Development, redevelopment, and reconstruction in the
subwatershed, especially in GLC-4 (see Figure 2) in areas of potential
development adjacent to TH 55, may increase volume of stormwater runoff from
the subwatershed as well as increasing nutrient and sediment loads.
- The HHPLS identified two locations where for both
existing and future conditions higher velocities than desired may result in
erosive velocities at outlets or culverts. These include the TH 101 culvert
at the outlet of Snyder
Lake and at an arch
culvert that passes Ditch #15 below CR 6.
Erosion control or energy dissipation measures may be required in those