The watershed dams built through Public Law 83-
566 are important to Wisconsin in many ways.
They provide flood control to prime farmland,
highways, communities and residences and con-
serve natural resources.
Wisconsin was chosen in 2000 as a pilot state to
rehabilitate several aging watershed dams. Alma
Mill Creek Watershed Dams 2, 3 and 5 are part of
this national pilot rehabilitation project.
When rehabilitation work is complete these
♦ meet current NRCS standards for
providing public health and safety
♦ have an extended effective life of
another 50 years
♦ comply with Wisconsin Department
of Natural Resources Dam Safety
Administrative Code (NR333).
Sedimentation has an adverse effect on sago pondweed,
a favorite food source of tundra swans. Dams in the
Alma Creek Watershed prevent tons of sediment from
reaching Rieck’s Lake, important habitat for migrating
This dam provides significant reduction of flood and sediment damage to
roads, bridges and wildlife habitat and has stopped the advance of a gully
that was causing severe erosion. Road runs across top of dam.
Six flood control dams are protecting the watershed.
Keeping Dams Safe
Protecting People, Property and
Considerable siltation occurred behind several dams
over the years reducing floodwater storage. Separa-
tion at pipe joints in the principal spillway caused
incipient and potential failure of the dams.
The USDA Natural Resources Conservation Service
developed a supplemental watershed plan and envi-
ronmental assessment which recommended repair to
Alma Creek Watershed Structures 2, 3 and 5.
Prior to construction, an ordinance was enacted to
restrict development on the floodplain downstream of
the three dams. Principal spillway outlet conduits were
repaired at all three structures and sediment removed
from structures 3 and 5. As a result, the three dams
will continue to provide gully, sediment and flood
Construction project cost: $260,