Natural Resources
Conservation Service
Ecological site F094CY037MI
Cool Wet Floodplain
Last updated: 9/11/2024
Accessed: 09/15/2026
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Provisional. A provisional ecological site description has undergone quality control and quality assurance review. It contains a working state and transition model and enough information to identify the ecological site.
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Figure 1. Mapped extent
Areas shown in blue indicate the maximum mapped extent of this ecological site. Other ecological sites likely occur within the highlighted areas. It is also possible for this ecological site to occur outside of highlighted areas if detailed soil survey has not been completed or recently updated.
MLRA notes
Major Land Resource Area (MLRA): 094C–Northern Michigan Limestone Lake Plains
This area is dominated by lake plains, some of which are till-floored plains. Drumlins, moraines, and outwash plains occur throughout the area. The terrain includes flat outwash and lake plains and steep slopes in areas of moraines. Elevation ranges from 177 to 300 m (580 to 985 ft). Local topographic relief averages 7 m and ranges up to 79 m (25 to 260 ft). The Cheboygan, Ocqueoc, and Thunder Bay Rivers are the major streams in the area. This area is covered with thin to thick glacial deposits. Bedrock is generally at shallow depths and is evident throughout the area. It consists of Devonian limestone and dolomite with interbedded shale, chert, and anhydrite stringers. Karst features are very common in the area.
About two-thirds of this MLRA is in small, privately owned holdings, and the other third consists of State forestland. The forests are used mainly for timber production and recreation. Dairy and beef operations are very important enterprises in the area. Forage and feed grain crops for dairy cattle and other livestock are the principal crops. Wheat, oats, corn, potatoes, and hay also are grown. Wilderness State Park Natural Area, Negwegon State Park, Atlanta State Forest, and Beaver Island State Wildlife Research Area are among the more notable conservation lands in the area.
Summary of existing land use:
Upland Forest (40%)
Hardwood (24%)
Conifer (14%)
Swamps and Marshes (32%)
Developed (10%)
Agricultural (8%)
Open Water (6%)Classification relationships
According to the USFS (Bailey) system of ecoregions, the site is located mostly within 212Hj (Presque Isle Lake and Till Plains) and 212Hl (Valders Red Till and Sandy Lake Plain) subsections. According to the EPA (Omernik) system of ecoregions, the site is located in 50ab (Cheboygan Lake Plain) and eastern 50ac (Onaway Moraines) level IV ecoregions. This site is outside the environmental range of the Kotar system. This site corresponds to the Complex lowland ecological land type phases 50-59, in the USFS Ecological Land Type system.
Ecological site concept
The central concept of Cool Wet Floodplain is lowlands adjacent to a river or stream, periodically flooded, sometimes of long duration during the growing season or with a high watertable, and capable of supporting hydric vegetation (poorly drained or wetter). Site is in lower elevation northern portions of the MLRA where boreal conifer species are more frequent associates. Vegetation trending towards floodplain forest.
Associated sites
F094CY036MI Cool Floodplain
Similar sites
F094AB025MI Wet Floodplain
Table 1. Dominant plant species
Tree (1) Thuja occidentalis
(2) Populus balsamiferaShrub (1) Cornus sericea
Herbaceous (1) Matteuccia struthiopteris
Physiographic features
Site is located on floodplains eroded through glacial till or outwash.
Table 2. Representative physiographic features
Landforms (1) Flood plain
Runoff class Negligible to low Flooding duration Very brief (4 to 48 hours) to very long (more than 30 days) Flooding frequency Occasional to very frequent Elevation 581 – 1319 ft Water table depth 0 – 10 in Aspect Aspect is not a significant factor Climatic features
Mean annual temperatures are 6.0 to 7.1 °C (43 to 45 °F). The warmest six months average 14.6 to 15.4 °C (58 to 60 °F). Mean July temperatures range from 19.1 to 20.2 °C (66 to 68 °F). Mean January temperatures range from -7.9 to -5.9 °C (18 to 21 °F). The maximum monthly average daily highs are 24.1 to 27.3 °C (75 to 81 °F). The minimum monthly average daily lows are -13.3 to -9.4 °C (8 to 15 °F). Mean annual precipitation ranges from 720 to 810 mm (28 to 32 in). The western one-third of the area is wetter than the eastern two-thirds. The precipitation occurs as both rain during the growing season and snow in winter. Average 0 °C (32 °F) frost-free season ranges from 100 to 161 days. Average -2 °C (28 °F) freeze-free season is 137 to 188 days. Mean annual snowfall ranges from 1.6 to 2.9 m (60 to 110 in). Mean annual extreme minimum temperatures range from -31.6 to -23 °C (-25 to -9 °F), or hardiness zones 4b to 6a.
Table 3 Representative climatic features
Frost-free period (characteristic range) 100-120 days Freeze-free period (characteristic range) 130-160 days Precipitation total (characteristic range) 30 in Frost-free period (actual range) 80-130 days Freeze-free period (actual range) 120-170 days Precipitation total (actual range) 30-30 in Frost-free period (average) 110 days Freeze-free period (average) 140 days Precipitation total (average) 30 in Characteristic rangeActual rangeBarLineFigure 2. Monthly precipitation range
Characteristic rangeActual rangeBarLineFigure 3. Monthly minimum temperature range
Characteristic rangeActual rangeBarLineFigure 4. Monthly maximum temperature range
BarLineFigure 5. Monthly average minimum and maximum temperature
Figure 6. Annual precipitation pattern
Figure 7 Annual average temperature pattern
Climate stations used
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(1) CHEBOYGAN [USC00201492], Cheboygan, MI
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(2) PELLSTON RGNL AP [USW00014841], Pellston, MI
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(3) ALPENA WWTP [USW00014814], Alpena, MI
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(4) ONAWAY 4N [USC00206184], Onaway, MI
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(5) ROGERS CITY [USC00207094], Rogers City, MI
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(6) ALPENA CO RGNL AP [USW00094849], Alpena, MI
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(7) CROSS VILLAGE 1E [USC00201896], Harbor Springs, MI
">Influencing water features
Site subject to seasonal flooding during the growing season, at long enough duration to exclude flood sensitive species. Seasonal high water table generally within the depth of a majority of roots, less that 25 cm.<br />
Soil features
Soils are very poorly drained to poorly drained variable textures that are seasonally flooded. They are commonly classified Fluvaquentic Endoaquolls, Histic Humaquepts, and Fluvaquentic Haplosaprists, and commonly mapped as Evart, Bowstring, and Thunderbay series or components. The top 50 cm has a typical pH of 7.1 and is 50% sand and 21.9% organic matter. At depth, pH ranges up to 7.4, and texture averages 60% sand and 15% clay. Depth to impeded hydraulic conductivity or root restrictive layers averages >200 cm. Depth to carbonates averages 110 cm.
Table 4. Representative soil features
Parent material (1) Alluvium
Surface texture (1) Sand
(2) Loam
Drainage class Poorly drained to very poorly drained Permeability class Slow to moderately rapid Soil depth 79 – 0 in Surface fragment cover <=3" 0 – 1 % Surface fragment cover >3" 0 – 1 % Available water capacity
(0-39.4in)1.97 – 9.84 in Soil reaction (1:1 water)
(0-19.7in)6 – 7.5 Subsurface fragment volume <=3"
(0-59.1in)0 – 5 % Subsurface fragment volume >3"
(0-59.1in)0 – 1 % Ecological dynamics
Cool Wet Floodplain tends to share the same ecological dynamics as Natureserve/Landfire system, Eastern Boreal Floodplain. Stand replacing fires occurred every 500-2000 years, while light surface fires were very rare. Frequent flooding may transport nutrients and enhance vegetation growth. Severe flooding may occasionally uproot trees and create canopy openings. Overstory was dominated by flood tolerant species like poplar (Populus spp.) and willow (Salix spp.) in flood scoured areas, and whitecedar (Thuja occidentalis) in stable areas with groundwater flow. The wet, relatively high base soils support a productive understory that tolerates periodic inundation. common species include the thicket forming red-osier dogwood (Cornus sericea) and the ostrich fern (Matteuccia struthiopteris).
State and transition model
More interactive model formats are also available. View Interactive Models
Click on state and transition labels to scroll to the respective textState 1 submodel, plant communities
Communities 2 and 5 (additional pathways)
State 2 submodel, plant communities
State 3 submodel, plant communities
State 4 submodel, plant communities
State 1
Reference StateDominant plant species
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arborvitae (Thuja occidentalis), tree
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balsam poplar (Populus balsamifera), tree
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redosier dogwood (Cornus sericea), shrub
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ostrich fern (Matteuccia struthiopteris), other herbaceous
Community 1.1
Floodplain Forest: Acer saccharinum - Ulmus americana / Onoclea sensibilis Floodplain ForestCommunity 1.2
Wet MeadowCommunity 1.3
Shrub-ThicketCommunity 1.4
Emergent MarshCommunity 1.5
Inundated Shrub SwampPathway 1.1A
Community 1.1 to 1.2Temporary prolonged inundation.
Pathway 1.1B
Community 1.1 to 1.3Clearcut/Blowdown.
Conservation practices
Early Successional Habitat Development/Management Forest Stand Improvement Pathway 1.2A
Community 1.2 to 1.1Succession.
Conservation practices
Tree/Shrub Site Preparation Tree/Shrub Establishment Pathway 1.2B
Community 1.2 to 1.3Succession.
Conservation practices
Tree/Shrub Site Preparation Tree/Shrub Establishment Pathway 1.2D
Community 1.2 to 1.4Permanent inundation.
Pathway 1.2E
Community 1.2 to 1.5Shrub establishment; permanent inundation.
Conservation practices
Tree/Shrub Establishment Pathway 1.3A
Community 1.3 to 1.1Succession.
Conservation practices
Tree/Shrub Site Preparation Tree/Shrub Establishment Pathway 1.3B
Community 1.3 to 1.2Temporary prolonged inundation.
Pathway 1.3C
Community 1.3 to 1.4Permanent inundation.
Pathway 1.3C
Community 1.3 to 1.5Permanent inundation.
Pathway 1.4A
Community 1.4 to 1.2Drop water table.
Pathway 1.4C
Community 1.4 to 1.5Temporary drop water table; shrub establishment.
Pathway 1.5A
Community 1.5 to 1.2Drop water table; shrub mortality.
Conservation practices
Brush Management Pathway 1.5C
Community 1.5 to 1.4Temporary drought; shrub mortality.
State 2
Cultural StateCommunity 2.1
Sustainable Crop, Pasture, or PlantationCommunity 2.2
Unsustainable Cultural PhaseCommunity 2.3
Conservation FeatureCan be a grassed waterway, conservation reserve, a small patch pollinator garden, or other land taken out of its primary cultural production to mitigate or reduce impacts of adjacent land use, and is not by itself a permanent restoration of a complete native biological community and associated ecosystem services.
Pathway 2.1A
Community 2.1 to 2.2Revert to unsustainable cultural practices.
Pathway 2.1B
Community 2.1 to 2.3Establish conservation feature.
Conservation practices
Conservation Cover Grassed Waterway Pathway 2.2A
Community 2.2 to 2.1Implement sustainable cultural practices.
Conservation practices
Conservation Crop Rotation Cover Crop Nutrient Management Integrated Pest Management (IPM) Pathway 2.2B
Community 2.2 to 2.3Establish conservation feature.
Conservation practices
Conservation Cover Grassed Waterway Pathway 2.3A
Community 2.3 to 2.1Implement sustainable cultural practices.
Conservation practices
Conservation Crop Rotation Cover Crop Nutrient Management Integrated Pest Management (IPM) Pathway 2.3B
Community 2.3 to 2.2Revert to unsustainable cultural practices.
State 3
Seminatural Drained StateCommunity 3.1
Ruderal Drained Meadow & ShrubCommunity 3.2
Exotic Ruderal Drained ForestPathway 3.1A
Community 3.1 to 3.2Succession
Pathway 3.2A
Community 3.2 to 3.1Blowdown/clearcut.
Conservation practices
Early Successional Habitat Development/Management Forest Stand Improvement State 4
Seminatural StateCommunity 4.1
Ruderal Wet Meadow & Shrub SwampCommunity 4.2
Exotic Ruderal Swamp ForestPathway 4.1A
Community 4.1 to 4.2Succession.
Pathway 4.2A
Community 4.2 to 4.1Blowdown/clearcut.
Conservation practices
Early Successional Habitat Development/Management Forest Stand Improvement Transition T1A
State 1 to 2Drain; clear vegetation; cultivate domesticated species.
Transition T1B
State 1 to 3Drain; clear vegetation, invasive species introduced.
Transition T1C
State 1 to 4Clear vegetation, invasive species introduced.
Restoration pathway R2
State 2 to 1Restore hydrology; remove domesticated species; restore native species.
Conservation practices
Brush Management Restoration and Management of Rare and Declining Habitats Wetland Wildlife Habitat Management Wetland Restoration Herbaceous Weed Control Transition T2A
State 2 to 3Abandon, succession.
Transition T2B
State 2 to 4Restore hydrology; abandon; succession.
Conservation practices
Wetland Restoration Restoration pathway R3
State 3 to 1Restore hydrology; control invasive species; restore native species
Conservation practices
Brush Management Restoration and Management of Rare and Declining Habitats Wetland Wildlife Habitat Management Wetland Restoration Herbaceous Weed Control Transition T3A
State 3 to 2Clear vegetation; cultivate domesticated species.
Transition T3B
State 3 to 4Restore hydrology.
Conservation practices
Wetland Restoration Restoration pathway R4
State 4 to 1Control invasive species; restore native species.
Conservation practices
Brush Management Restoration and Management of Rare and Declining Habitats Wetland Wildlife Habitat Management Herbaceous Weed Control Transition T4A
State 4 to 2Drain; clear vegetation; cultivate domesticated species.
Transition T4B
State 4 to 3Drain.
Additional community tables
Table 5. Community 1.1 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Table 6. Community 1.2 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Table 7. Community 1.3 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Table 8. Community 1.4 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Table 9. Community 1.5 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Table 10. Community 2.1 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Table 11. Community 2.2 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Table 12. Community 2.3 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Table 13. Community 3.1 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Table 14. Community 3.2 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Table 15. Community 4.1 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Table 16. Community 4.2 plant community composition
Group Common name Symbol Scientific name Annual production () Foliar cover (%) Interpretations
Supporting information
Other references
A PROVISIONAL ECOLOGICAL SITE is a conceptual grouping of soil map unit components within a major land resource area (MLRA) based on the similarities in response to management. A provisional ecological site is a first approximation based on a cursory literature review, personal experience, and limited field reconnaissance. As more adequate literature review, expert opinion, and intensive plot data are collected, the site concept is subject to shifting, broadening, narrowing, subdivision, or re-aggregation in definition. Likewise, the community dynamics will be more elaborate in content, and may also change in structure, upon reaching approved status.
Future work, as described in a project plan, to validate the information in this provisional ecological site description is needed. This will include field activities to collect low and medium intensity sampling, soil correlations, and analysis of that data. Annual field reviews should be done by soil scientists and vegetation specialists. A final field review, peer review, quality control, and quality assurance reviews of the ESD will be needed to produce the final document. Annual reviews of the project plan are to be conducted by the Ecological Site Technical Team.
Albert, D. A. et al., 1995. Vegetation circa 1800 of Michigan. Michigan's native landscape as interpreted from the General Land Office Surveys 1816-1856 (digital map), Lansing: Michigan Natural Features Inventory.
Baker, M.E. and Barnes, B.V., 1998. Landscape ecosystem diversity of river floodplains in northwestern Lower Michigan, USA. Canadian Journal of Forest Research, 28(9), pp.1405-1418.
Barnes, B. V. and Wagner, W. H., 2004. Michigan trees: a guide to the trees of the Great Lakes region. Ann Arbor (Michigan): University of Michigan Press.
Burger, T. L. and Kotar, J., 2003. A Guide to Forest Communities and Habitat Types of Michigan. Madison, Wisconsin: Department of Forest Ecology and Management, University of Wisconsin.
Cleland, D. T. et al., 1994. Field guide: Ecological classification and inventory system of the Huron-Manistee National Forests, s.l.: USDA Forest Service, North Central Forest Experiment Station.
Eichenlaub, V.L., 1979. Weather and climate of the Great Lakes region. University of Notre Dame Press, Indiana. 335 pages.
GHCN, 2016. Global Historical Climatology Network Monthly Versions 2 and 3 (temperature and precipitation data). NOAA. https://www.ncdc.noaa.gov/ghcnm/
Kost, M. A. et al., 2010. Natural Communities of Michigan: Classification and Description, Lansing, MI: Michigan Natural Features Inventory.
Landfire, 2017. Landfire Biophysical Settings Review Site. Accessed May, 2017 http://www.landfirereview.org/descriptions.html.
National Ocean Service, 2017. Tides and Currents (historic water level data for US coastal waters). https://tidesandcurrents.noaa.gov/stations.html?type=Water+Levels
NDBC, 2017. National Data Buoy Center (wave height and period data for US coastal waters). NOAA. http://www.ndbc.noaa.gov/
PRISM Climate Group. 2013. Gridded 30 Year Normals, 1981-2010. Oregon State University, http://prism.oregonstate.edu
U.S. Department of the Interior, Geological Survey, 2011. LANDFIRE: LANDFIRE 1.1.0 Existing Vegetation Type layer. http://landfire.cr.usgs.gov/viewer/
USFS, Witness Tree data for northern Lower Michigan.
Contributors
Gregory J. Schmidt
Approval
Greg Schmidt, 9/11/2024
Acknowledgments
The following individuals made substantive comments regarding the development of the Provisional Ecological Sites: Randy Swaty, The Nature Conservancy; Trevor Hobbs, USFS; Richard A. Corner, USFS; Andy Henriksen, NRCS; Dan Zay, NRCS.
Rangeland health reference sheet
Interpreting Indicators of Rangeland Health is a qualitative assessment protocol used to determine ecosystem condition based on benchmark characteristics described in the Reference Sheet. A suite of 17 (or more) indicators are typically considered in an assessment. The ecological site(s) representative of an assessment location must be known prior to applying the protocol and must be verified based on soils and climate. Current plant community cannot be used to identify the ecological site.
Author(s)/participant(s) Contact for lead author Date 10/30/2023 Approved by Approval date Composition (Indicators 10 and 12) based on Annual Production Indicators
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Number and extent of rills:
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Presence of water flow patterns:
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Number and height of erosional pedestals or terracettes:
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Bare ground from Ecological Site Description or other studies (rock, litter, lichen, moss, plant canopy are not bare ground):
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Number of gullies and erosion associated with gullies:
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Extent of wind scoured, blowouts and/or depositional areas:
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Amount of litter movement (describe size and distance expected to travel):
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Soil surface (top few mm) resistance to erosion (stability values are averages - most sites will show a range of values):
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Soil surface structure and SOM content (include type of structure and A-horizon color and thickness):
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Effect of community phase composition (relative proportion of different functional groups) and spatial distribution on infiltration and runoff:
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Presence and thickness of compaction layer (usually none; describe soil profile features which may be mistaken for compaction on this site):
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Functional/Structural Groups (list in order of descending dominance by above-ground annual-production or live foliar cover using symbols: >>, >, = to indicate much greater than, greater than, and equal to):
Dominant:
Sub-dominant:
Other:
Additional:
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Amount of plant mortality and decadence (include which functional groups are expected to show mortality or decadence):
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Average percent litter cover (%) and depth ( in):
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Expected annual annual-production (this is TOTAL above-ground annual-production, not just forage annual-production):
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Potential invasive (including noxious) species (native and non-native). List species which BOTH characterize degraded states and have the potential to become a dominant or co-dominant species on the ecological site if their future establishment and growth is not actively controlled by management interventions. Species that become dominant for only one to several years (e.g., short-term response to drought or wildfire) are not invasive plants. Note that unlike other indicators, we are describing what is NOT expected in the reference state for the ecological site:
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Perennial plant reproductive capability:
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