|
Current Fees | Flood News from Michigan Floodplain Managers The document Procedures and Design Criteria for Storm Water Management Systems and Soil Erosion and Sedimentation Control Program represents the culmination of a two year long effort on behalf of the Drain Commissioner to revise drainage standards first adopted in 1981. This document is under revision so it may change without notice until this disclaimer is removed from the site. However it may be used as a general guide. Please check with the Drain Commissioner's office before you make any decisions based on this document. Click here for details.
Some of the more significant changes to Livingston County drainage design requirements include the following: • Increasing detention requirements from the previous 50 year storm (2% chance of occurrence) standard to the provision of storm water storage for the 100 year storm (1% chance of occurrence). • Requiring the use of two basin (e.g. use of a forebay) design on all storm water storage systems, both retention and detention. • Encouraging detention basin designs which incorporate wet-bottom ponds. Wet bottom ponds encourage vegetative uptake of excess nutrients, thus enhancing water quality downstream. The new drainage and soil erosion standards were developed using a process of stakeholder input which included a number of meetings with a Technical Advisory Group, wherein the concerns of various parties were brought forth and addressed. The project was funded in part by a grant from the Great Lakes Commission. Click here to see the document under revision. |
Drain Commissioner email: eMail the Drain Commission Office
East Complex
2300 E. Grand River Avenue Suit 105|
Howell, MI 48843
Phone 517.546.0040 |
Fax 517.545.9658
Home | County Home | Phase II | Title Companies | Drainage Systems | Commercial & Homeowners | About Us | Septage | Calendar
Can't find what you are looking for?
Need to ask a question?
Problem with the site?
Contact the Webmaster
Last updated: Wednesday, September 23, 2009 Updated by: L. Lalewicz
Changes to the previous design manual
reflect the changing role of the Commissioner in an urbanizing county. The
Commissioner performs an intensive balancing act in attempting to mitigate
the impacts of development in a watershed. This involves weighing the need
to protect individual property and human health against impacts to water
resources, such as wetlands and streams.