Final results of a 1.5 year study of sediment transport in Millers Creek within the City of Ann Arbor were recently released at a public meeting on February 5. The city contracted with Environmental Consulting & Technology, Inc. to conduct the study following a series of flooding events near the mouth of the creek. These floods were due to a new course the creek was taking following sediment build-up in its floodway. The study estimated that 47 tons of sediment were deposited in Ruthven Nature Area over a five-year period.
The study recommends a range of small and large projects to reduce future accumulation or sediment transport to the Huron River. Recommendations run from simple annual maintenance activities priced at $2-3, 000 per year, but yielding little sediment removal, to the $1.5 million stream restoration design HRWC helped develop for the former Pfizer property (now owned by the University of Michigan). Recommended projects include a sediment trap and removal approach, as well as channel modification (and restoration) to reduce sediment loading at the source. Some recommendations can be undertaken directly by the City of Ann Arbor alone, while others require participation from Ann Arbor Public Schools or the University of Michigan. All recommended projects would further benefit the Huron River by reducing sediment and nutrient loading from Millers Creek.
City staff will share the study with the city council and submit select recommendations for stormwater funding. Take a look for yourself at the project website.