The Minnehaha Creek Watershed District is looking at doing a dye test to the area around Coldwater Spring to finally answer the question of where does the water for Coldwater Spring come from.
This test uses non toxic dyes that have been used for human consumption
for many many years. If used, it is also only a temporary dye, and
soon afterwards the Spring will run free of it.
However this test if done correctly, will show conclusively weather or not the Southwest Loop Pond does or does not sit over the source water to the Coldwater Spring.
Minnehaha Creek Watershed is trying to convince all agencies involved that this test is needed, and to allow it to happen, to answer that question. MnDOT's help with this would be greatly appreciated.
has stated that they have done dye tests in Southwestern Minnesota
routinely and support a dye test for Coldwater if everyone else agrees
to it. There are however many other agencies and depending on how
the paperwork is handled it could take anywhere from a few days to
a few months to get approval. It will come down to how badly do the
agencies want to get the paperwork done, as to weather or not the
test can be done before MnDOT starts construction in a month.