Archived Data & Other Information
For lake index site monitoring, volunteers observe, measure, and record environmental
data as well as collect water samples. Lake index site monitoring is done away from the
shoreline, and therefore requires the use of a boat, canoe, or kayak. Environmental data
that is recorded is the same as those recorded by screening and baseline monitors and
include parameters such as air/water temperature, wind conditions, wildlife present,
Secchi disk depth, and overall perception of the condition of the water body. During each
sampling event, two water samples are collected and sent to the State Health Lab in Pierre
for analysis. There, parameters such as, Ammonia, Nitrates, TKN, and total Phosphorous
are determined. Locations are sampled twice a month between April and October.
East Dakota Water Development District
For more information on local aquatic plants, check out the Northern Prairie Wildlife Research
Center on the USGS web page.