- Modeled using Illudrain
and HEC-2 based on Farmington Hills Master Plan for Future
Land Use.
- Channel banks
and portions of entire channel were stabilized with a combination
of geotextile fabric overlaid with natural boulders or rock
fragment to prevent channel scour.
- Channel improvements
included excavation to depths approaching 5' at impoundment
locations to allow sediment deposition and to discourage
sediment transport to downstream areas.
- A low head dam
with overflow weir was constructed to maintain desired water
depths. Dam includes valve to allow lowering of impoundment
for future maintenance or sediment removal.
- Dam overflow weir
and rock channel lining assist in aerating stream flows
for water quality enhancement.
- Utilization of
excavated sumps within several locations of the drain channel
combined with bypass pumping of drain flows allowed excavation
and cleanout of the existing channel to occur without producing
excessive sediment transport to downstream areas.
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