David P. Lusch , Ph.D. Distinguished Senior Research Specialist Michigan State University

1. Michigan’s Water Withdrawal Assessment Process and Using the WWA Tool for Planning and Watershed Management David P. Lusch, Ph.D. DistinguishedSenior Research Specialist Michigan State University Dept. of Geography,Remote Sensing & GIS Research and Outreach Services Group Institute of Water Research and

2. Michigan’s Water Withdrawal Assessment Process for Planning and Watershed Management • Overview of the groundwater & surface water resources of the regions • Overview of the Water Withdrawal Assessment Tool (WWAT) • Example uses of the WWAT for sustainable community development

3. Michigan’s Water Withdrawal Assessment Process for Planning and Watershed Management • Evaluating your Master Plan • Check all the areas zoned residential (self-supplied) or Commercial/Industrial (self-supplied) to determine which catchments they fall within. • “Roads” and “Aerial Photos” Data Layers in WWAT are very useful spatial references. • Use “New Withdrawal” in WWAT to determine the total allowable depletion in those catchments.

4. Michigan’s Water Withdrawal Assessment Process for Planning and Watershed Management 3 1 2 For exploration purposes, we can ignore these boxes.

5. Michigan’s Water Withdrawal Assessment Process for Planning and Watershed Management http://www.miwwat.org/getflow.asp? trans=5400 &shore=0 &bdrkf=1 &bdrkt=99999 &aline=0.000 &bline=25.460 &cline=25.523Allowable catchment depletion (gpm) (initial amount – not yet updated!!) &dphzoned=125 &estdphbdrk=458 &pctdrift=100 &pctrock=0 &kvw=233.693 &type=Cold transitional stream &wsid=12269 &x=-84.105415 &y=44.613435 &mapx=650155.8847889714 &mapy=453061.31356536905

6. Michigan’s Water Withdrawal Assessment Process for Planning and Watershed Management • So how many gpm do you need? • A standard residence needs a minimum of 20 gpm (~ 60 gpm with home irrigation). • For clustered developments (e.g., PUDs), multiply the # of parcels times 20 gpm to estimate the cumulative depletion. e.g. 15 parcels x 20 gpm/parcel = 300 gpm • Note: residential water well withdrawals are NOT regulated by state law. Consider re-arranging the zoning map to mitigate potential adverse impacts.

7. Michigan’s Water Withdrawal Assessment Process for Planning and Watershed Management • So how many gpm do you need? • Commercial/industrial user needs vary widely. Some water-intensive businesses may need 600 – 1000 gpm. • PA 33 (2006) prohibits a local unit of government from enacting or enforcing an ordinance that regulates a large quantity withdrawal (i.e., 70 gpm or more). • The evaluation suggested here is with the intent of re-arranging the zoning map to mitigate potential adverse impacts.

8. Michigan’s Water Withdrawal Assessment Process for Planning and Watershed Management • Revise your Site Plan Review process • Amend your site plan review checklist to require submission of applicable LQW Registration with the site plan for any self-supplied facility with a pumping capacity of 70 gpm or more (e.g., within “Other Environmental Impacts” section).

9. Michigan’s Water Withdrawal Assessment Process for Planning and Watershed Management • Economic Development Office • Check all parcels slated for new/expanded Commercial/Industrial (self-supplied) to determine which catchments they fall within. • Use “New Withdrawal” in WWAT to determine the total allowable depletion in those catchments. • Compare allowable depletions to client’s needs.

10. Michigan’s Water Withdrawal Assessment Process for Planning and Watershed Management The End This concludes our presentation segments www.miwwat.org gwmap.rsgis.msu.edu lusch@msu.edu