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Call Dan Spalding to get
started 866 754 2527 or DanSpalding@GooneybirdsLLC.com
FROM: http://springlakewatershed.org/Spring%20Lake%20WS%20Plan%20Final%20July%2010%202008.pdf Surface area of water in the Spring Lake watershed
comprises 294.2 acres or 2.0 percent of the
land cover of the watershed. Spring Lake
itself accounts for the largest portion of the surface
water with a surface area of 236.8 acres.
Twenty-six farm ponds account for 15.9 acres which
have been constructed over the past 60 years. Spring Creek and its tributaries
in the watershed
account for 15 acres or 14 stream miles.
Constructed in 1927 for the purpose of supplying water to the City of Macomb,
water storage capacity was 607 acre-ft. Since its construction the lake’s
storage capacity has
steadily declined due to build up of sedimentation. A study in 1947 indicated
the lake had lost
about 50 percent of its capacity over the 20-year life of the lake with the
volume estimated at 320
acre-ft. The study resulted in the dredging of the lake in 1951 to restore lost
storage capacity to
an estimated 425 acre-ft. In 1968, continuing decline in volume led to the
construction of a new
dam 1400 feet down stream to increase the capacity of Spring Lake. The designed
the expanded lake was to be 3,000 acre-ft. In 1983, the McDonough County Soil
Conservation District put together a watershed plan in order to reduce the high
sedimentation inflow into the lake. This plan led to the implementation of
practices like grass
waterways, conservation tillage, watershed control basins, etc. that would
attempt to reduce rate
of sediment buildup. This plan estimated the lake volume in 1983 at 2,608
acre-ft. (Wells 1998).
In September 1996 Dennis Wells using Global Positioning System (GPS) receiver
calculated the existing volume of the lake at 1,808 acre-ft (Wells 1998).
In 2008, Timothy Spier of Western Illinois University
conducted a study of Spring Lake to
determine the volume. The study was to create a bathymetric
map of Spring Lake using a Global
Positioning System (GPS) receiver and software to accurately calculate the lakes
found the volume to be 1,929 acre-ft which
was greater than the previous two studies of the lake.
He points out that this was not an increase in the volume of the lake but
differences in the
method used to calculate total volume. In addition, he found through comparison
studies the west arm of Spring Lake has lost about 31 percent volume since 1997
After finding this information that more accurately sizes the lake, Gooneybird's
LLC believes the design as shown will be very adequate for improving the water
quality in the lake and degrading the biological sediment at the hypolimnion.
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