Watershed Forestry Initiative Ellen Kohler Attorney & Policy Specialist Funded in part by

1. Watershed Forestry Initiative Ellen Kohler Attorney & Policy Specialist Funded in part by Michigan Department of Natural Resources and Environment, Urban and Community Forestry Program and the USFS State and Private Forestry Program

2. 4. East Bay Shoreline 3. West Bay Shoreline 5. Old Mission Peninsula 1. Elk River Chain of Lakes 8. Ptobego Creek 9. Yuba Creek 7. Acme Creek 6. Mitchell Creek 2. Boardman River

3. Pollutant Priorities in Grand Traverse Bay Watershed Protection Plan

4. Definition: The use of forests and forestry practices to protect, restore, and sustain water quality, water flows, and watershed health and condition. Watershed Forestry

5. “Forests and forestry practices are critical components of healthy watersheds. Trees and forests can prevent erosion, filter contaminants before they enter the waterway, absorb rainfall and snow melt, recharge aquifers, and slow storm water runoff.” US Forest Service

6. Stormwater and Water Quality • Top two pollutants in Grand Traverse Bay watershed = Excessive Nutrients and Sediments. • Carried to lakes, rivers, streams and the bay through stormwater runoff • Stormwater on sites with natural cover results in: 10 percent runoff 25 percent shallow infiltration 25 percent deep infiltration 40 percent evapo-transpiration • Stormwater on sites with 75-100% impervious surfaces results in: 55 percent runoff 10 percent shallow infiltration 5 percent deep infiltration and 30 percent evapo-transpiration.

7. Urban and Community Forests of the North Central East Region by US Forest Service • The following forest attributes are estimated for the urban and community land in Michigan. • 107.8 million trees • 20.6 million metric tons of C stored ($469.7 million value) • 678,000 metric tons/year of C sequestered ($15.5 million value) • 14,820 metric tons/year total pollution removal ($121.7 million value) • 157 metric tons/year of CO removed ($221,500 value) • 2,432 metric tons/year NO2 removed ($24.1 million value) • 6,364 metric tons/year of O3 removed ($63.0 million value) • 1,060 metric tons/year of SO2 removed ($2.6 million value) • 4,806 metric tons/year of PM10 removed ($31.8 million value) • GTR-NRS-54 at 33.

8. National Tree Benefit Calculator www.treebenefits.com 12 Maple Trees of 4 inch diameter would intercept approximately 1400 gallons of stormwater each year for this site

9. Traverse City Shoreline 70 inch willow Treats 8700 gallons of stormwater each year

10. Traverse City Shoreline 20 inch spruce Treats 2700 gallons of stormwater each year

11. American Forests’ Urban Ecosystem Analysis: CITYgreen • Measures tree canopy and quantifies changes over time • Quantifies their ecological benefits • Calculates a dollar value • Communicates the positive impacts of green infrastructure from reducing built infrastructure costs and increasing environmental quality • Builds capacity of policy makers to plan and manage their cities with green infrastructure to maximize their natural capital

12. SE Michigan and the City of Detroit Planning area of 27,863 acres 31% tree canopy cover in 2005 Goal: Trends for open space, trees, and urban landcovers over a 10 year period Results: Greatest decline in green infrastructure was in counties adjacent to Detroit Ecosystem services of tree canopy: 190.8 million cu.ft. of stormwater management representing $382 million in value 2,100,000 lbs. of air pollutants removed representing $5,100,000 in removal value

13. Grand Traverse Bay Watershed

14. CITYgreen Analysis: Grand Traverse Bay Watershed Status as of 2009 • 301,945 acres tree canopy covering • 48.7% of land in the watershed • (42.9% of land in Michigan – USFS study) • 19,917,596 lbs. of air pollutants removed representing $58,185,928/ year • 129,931 tons of total carbon sequestered • 1,649,883,686 cubic feet of stormwater storage representing $3,299,767,371

15. CITYgreen Analysis: Grand Traverse Bay Watershed Area: 619,466 acres Goal: Trend in Tree Canopy Cover from 2001 to 2009 Results: Loss of more than 4000 acres of tree canopy cover Value of Lost Ecosystem Services: 30,103,675 cubic feet of stormwater representing $60,207,351 in infrastructure value 272,165 lbs. of air pollutants removed representing $795,085 in removal value 1776 tons lost carbon storage

16. CITYgreen Analysis: Grand Traverse Bay Watershed Stormwater volume measured for a 2-year 24-hour event (2.25 inches for our region)

17. CITYgreen Analysis: Change in Tree Canopy Acreage – Seven Smaller Subwatersheds

18. CITYgreen Analysis: Elk-River-Chain-of-Lakes Subwatershed Loss of 1082 acres of tree canopy and 8,927,321 cubic feet of gross stormwater storage 161,070

19. CITYgreen Analysis: Boardman Subwatershed Loss of 2573 acres of tree canopy and 18,470,482 cubic feet of gross stormwater storage

20. Boardman River

21. Boardman River

23. Percentage Tree Canopy Cover Lost 2001 to 2009

24. Next Steps • Continue to share results with • stakeholders, planners, • local governments, and the • general public • Discuss approaches to protecting tree canopy • with landowners, local governments, • natural resource managers • Conduct finer resolution analysis in selected • areas, such as shorelines and river corridors • - Plant trees

25. Thank You! The Watershed Center 231.935.1514 www.gtbay.org