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Forestry and Watershed Managementin Wisconsin’s Lake Superior BasinCarmen Wagner, Forest Hydrologist, WI DNR
Photo: Carmen Wagner
Talk
• Introduction to Concerns
• Past Efforts• Forestry and Watershed
Considerations
Photo Credit: Jay Gallagher, DNR
Photo Credit: Jay Gallagher, DNR
Photo Credit: Mike Miller, DNR
Photo Credit: Dennis Pratt, DNR
Historic Efforts• 1954 – Red Clay Interagency
Committee starts work• 1972 & 1980 – Red Clay Reports• 1998 – Nemadji River Plan• 2000 – Lake Superior LaMP• 2007 – Managing Woodlands on
Lake Superior’s Red Clay Plain
With 50% of the upland aspenforest clearcut, snowmelt peaks becomede-synchronized yielding two smaller peak flows
Mature foresthydrograph
Marcell Experimental Forest, northern Minnesota, watershed no. 4
With all of the aspenupland clearcut, snowmeltpeakflow is synchronized, occurring 4 days earlier than mature forest conditions, and at twice the peakflow rate.
Mature forest hydrograph
Marcell Experimental Forest, northern Minnesota, watershed no. 4
-70
-50
-30
-10
10
30
50
70
90
110
130
150
170
0 20 40 60 80 100
Percent of entire basin in open or young-forests (<16)
Perc
ent c
hang
e in
pea
k flo
w
VLB83
VLB83
VLB83
VLB83
V86
V86
FKW99
L94
Reference to change in peak flow from a mature aspen forest
Management range for peak flows from basins with less than 60% of their area in open or young forests (<16)
Effects Are 1st Observed• For flat outwash or lake bed
basins (< 3% slopes) they need to be 10 sq. miles before there is enough power in the flowing water to cause excessive in-channel erosion
• For steep glacial moraine basins(3-40% hillslopes) they need to be 1 sq. mile
Total Open Lands
0% - 40%
40% - 55%
55% +
Ag / Urban Areas
0% - 40%
40% - 55%
55% +
Young Forests
0% - 40%
40% - 55%
55% +
Agriculture / Urban Area Management Considerations
• Landscape-Level– Amount of agriculture and urban
areas in watershed• Site-Level
– Capture runoff from fields and roads
– Break ag drainage systems– Plant trees in old fields
Forestry Considerations• Landscape-Level
– Amount of young forest in watershed– Amount of aspen likely to be harvested soon
in watershed– Amount of aspen in watershed
• Site-Level– Balance future harvests against maturing
young forests– Delay or move up harvests– Harvest in larger or smaller blocks– Convert aspen to different cover types
Other Considerations• Wildlife Habitat Objectives
– Important grassland habitat?– Important forest interior habitat?– Trout stream and beaver
interactions?• Site Characteristics
– Soils, slopes, drainage patterns– Current vegetation– Current land use
Other Considerations• Landowner Objectives
– Management goals• Income• Wildlife habitat• Scenic beauty
– Hands-on or hands-off management style
• Timeframe– Short-term or long-term solution?– Immediate or gradual impact?
Bark River Watershed
• Nearly 20,650 acres in size• Includes Bark River and three branches of
Lost Creek• 70% of watershed in private ownership• 20% in county ownership• 5% in state ownership
Ownership
Land Cover
• 40% Mixed broad-leaved deciduous
• 20% Aspen• 14% Mixed deciduous and
coniferous• 12% Grassland• 12% Non-forested wetlands
Ecological Subsection
• Superior – Ashland Clay Plain– Generally heavy red clay soils– Flat to gently rolling topography– Smaller streams draining to Lake
Superior have cut steep-sided channels
– Clay soils are underlain by sandier soils
Water Resources
• Bark River– Medium-sized spring-fed trout
stream– Classified as an Outstanding
Resource Water (ORW)• Lost Creek 1 & 2
– Small spring-fed trout streams– Shallow and sandy
• Lost Creek 3– Warm water stream with minnows
Bark River Watershed
• 19% total open lands– 12% young forests– 8% ag/urban areas
• Contains 6 hydrologic units, or smaller discrete watersheds, at which open land impacts are first observable
Total Open Land
Total Ag / Urban Areas
Total Young Forests
12
3
45
6
05
101520253035404550556065707580859095
100
1 2 3 4 5 6 Bark R
Ag/UrbanYoung Forests
Open Land Distribution
Location of Open Lands
Landscape-Level
• HUs at 20% or less open lands• Contain a balanced mix of
mature forests, young forests, and ag lands, providing a variety of benefits
• Room to increase open land acreage
Landscape-Level• Maintenance of aspen provides
important early successional wildlife habitat
• Beaver may be a concern on trout streams
• Most aspen currently along stream channels
• Fishery goals, rather than watershed goals, may lead to aspen conversion along streams
Landscape-Level• Ag and urban areas are smaller
percentage of watershed– 8% of entire watershed– 5% - 12% of HUs
• Grasslands are most common ag feature and can provide important wildlife habitat
• HU 1 drains primarily to Lake Superior and watershed connection not as strong
Site-Level• Bayfield County Forest• 227 acre stand of 50-year old aspen
– 150 acres in HU 3– 75 acres in HU 4
• Lost Creek is a warm water stream
Site-Level• Harvest, with no maturation of
young forests, would result in– HU 3 from 20.2% to 23% open lands– HU 4 from 19.8% to 21.5% open lands
• Bankfull flows should remain at historic levels
• Beaver impacts limited on warm water stream
Site-Level in Troutmere-Marengo Watershed• 30 acre field• Unnamed tributary to Marengo
River flows through property• In HU 6
– 0% young forests– 77.7% agricultural lands
Site-Level
• Landowner could:– Break ag drainage system– Plant trees in field
• In 15 years, total open lands would be reduced from 77.7% to 74.3%
• Over 200 acres of tree planting needed in HU to reduce total open lands to less than 55%
Other Components of Project
• Woodland Owner Survey in 2009– Landowners with at least 10 acres
of woodland that are not participating in MFL Program
– Sent out 981 surveys and had a response rate of 49%
Other Components of Project• Woodland Owner Survey in 2009
– 88% of landowners did not have a management plan
– 1% participated in some landowner assistance program
– Over 80% thought water quality in Lake Superior Basin was okay or excellent for scenic beauty, swimming, and catching fish
– Over 65% did not perceive any pollutants as moderate or severe problems
Other Components of Project
• Landowner Workshops in Feb –April 2010– Series of 6 sessions in 3 locations– Attended by over 100 landowners– 86% interested in implementing
management practices at conclusion of workshops
– 43% intend to develop management plans (91% did not have plans at start of workshops)
Other Components of Project
• Regional analysis and compendium of reports and research completed in Basin
• Management considerations report highlighting 12 watersheds as examples
Other Components of Project
• Regional analysis and compendium of reports and research completed in Basin
• Management considerations report highlighting 12 watersheds as examples
• Report discussing management options and benefits of ecosystems services in area
Goals of Project
• Educate landowners on links between land management and water quality in basin
• Provide resources to land managers to prioritize and focus efforts in times of limited budgeting and staffing
• Describe ecosystem services and benefits in Basin
Questions?