2020 Grand River Sampling

1990 Sampling Sites being Sampled in 2020

1990 Sampling Sites being Sampled in 2020

The numbers on this map represent the points where water samples and water quality data were collected in 1990.  We are revisiting these sites in 2020 to collect water quality data.

The 2020 Grand River Sampling Crew (Tara Kneeshaw, Jillian Ashton, Peter Wampler)

Sampling Crew (from left Jillian Ashton, Tara Kneeshaw, Peter Wampler) 

In 1990 Verlen Kruger led the first ever Grand River Expedition (GRE) from the Headwaters of the Grand River to the Mouth. This expedition has been repeated every 10 years and was scheduled for 2020 until it was postponed due to the COVID-19 pandemic. 

GVSU student Jillian Ashton, Dr Tara Kneeshaw, and Dr. Peter Wampler are sampling the entire river to compare current water quality to that observed in 1990.  This research is funded by the Student Summer Scholar Program through the GVSU Office of Undergraduate Research.

Presentation for the Virtual LGROW Grand River Spring Forum entitled "Comprehensive Water Quality Sampling of the Grand River  by Peter Wampler, GVSU, and Jillian Ashton, GVSU


2020 Sampling Results

Check back here for Water Quality Results from the 2020 Grand River Sampling Program. 

Results will be posted here as they become available.

2020 E. Coli Results (Preliminary)

2020 E. Coli Sampling

Over a period of 4 days we collected 39 water samples and analyzed them for Escherichia Coli (E. Coli).  We measured values from 1 E. Coli/100ml in Lake Michigan near the mouth of the Grand River to a high of 387.3 from Crockery Creek, a tributary of the Grand River.  We will be analyzing these data and determining likely sources for the measured values.

GVSU 2020 E. Coli Data on a Shaded Relief Map

Shaded Relief Map with E. Coli Data

This shaded relief map is a computer generated map of the shape of the earth's surface as it would look without trees or buildings with color representing the elevation of the land.

Superimposed on this map are circles which represent the amount of E. Coli measured in the water samples collected between June 15-18, 2020.  The presence of E. Coli indicates some input or interaction with human or animal fecal matter. 

Potential sources of human fecal contamination are leaky septic systems, sewage pipe leakage, and wastewater plant overflows during heavy rain events.  Animal fecal contamination comes from any warm blooded animal that defecates in our near the river such as geese, ducks, muskrats.  You can learn more about E. Coli on the EGLE Website.

2020 E. Coli Sampling Graph

 

2020 E. Coli Sampling Graph

This bar chart show the E. Coli level in all the samples collected between June 15-18, 2020.  The body contact standard for Michigan is 130 E. Coli per 100 ml of water.  Approximately 25% of the 2020 samples exceeded this limit.  Two Samples, Cedar River and Crockery Creek exceeded the EGLE daily maximum level of 300 E. coli per 100 ml. 

You can learn more about E. Coli level and limits here.

2020 E. Coli Data on a Aerial Photo Map

 

2020 E. Coli Data on a Aerial Photo Map

This Aerial Photo relief map is a computer generated map of an aerial photo draped over a three dimensional representation of the earth's surface.

Superimposed on this map are circles which represent the amount of E. Coli measured in the water samples collected between June 15-18, 2020.  The presence of E. Coli indicates some input or interaction with human or animal fecal matter. 

2020 Sampling Salinity Results ( Preliminary)