Northwest Indiana—especially Lake County along the southern shore of watershed basin of Lake Michigan — contains one of the most ecologically diverse regions in the whole county. This diversity comes from the area’s unique glacial history, the mixing of dune, wetland, and prairie ecosystems, and the influence of Lake Michigan’s moderating climate.
A fairly large variety of endangered, threatened, and rare (ETR) (Ecological Threat Register) species and high quality natural areas have been documented within the Deep River-Portage Burn Waterway watershed. The largest contiguous wetland tract is located on Deep River downstream of Lake George. (here) The Indiana Natural Heritage Data Center has recorded nearly 400 observations of ETR species including plant, reptile, amphibian, bird, mammal, crayfish, mollusk and crayfish species and 32 high quality natural communities including forest, savannah, prairie, and wetland habitats within its boundary.
The watershed’s diversity can be attributed to its location in the landscape. The Deep River-Portage Burns Waterway watershed falls in an area known as the Northwestern Morainal Natural Region. Several major vegetation types including the eastern deciduous forest, the tall grass prairie, and northern forest and wetland merge in this natural area. No other natural region compares in species diversity on an acre by acre basis because of this (Homoya et al, 1985).

Heres’s what is says on the 2017 NIRPC FILES
High concentration areas still remain unprotected. Notable areas include along the Little Calumet River and Deep River downstream (FLOWING NORTH TO LAKE MICHIGAN) of Lake George. Conservation of these land areas is not only important to protect critical habitat for ETR (Ecological Threat Register) species, but also in protecting the variety of services (ex. flood attenuation) they provide to society and the watershed as a whole. Additional high quality natural communities and ETR species may still be present in the watershed that have yet to be documented. A list of the ETR species and high quality natural communities that have been documented in the watershed is included in the appendices. Information on which community types the ETR species and high quality natural communities occur is also provided (Source: Derek Nimetz, DNR Division of Nature Preserves). The The largest contiguous wetland tract is located on Deep River downstream of Lake George. (“downstream” is actually north to Lake Michigan)

The Indiana Natural Heritage Data Center (INHDC) represents a comprehensive attempt to determine the state’s most significant natural areas through an extensive statewide inventory. However, the inventory is a continuous process. Over the past 10 years, 57 element occurrences were documented in the watershed including 54 ETR species and 3 high quality natural communities. (Please note, to find this info click here and you’ll find the link at the bottom)
In 2018 the City of Hobart and the Northwestern Indiana Regional Planning Committee (NIRPC) engaged The Lakota Group along with Duncan Associates to create a set of zoning standards to guide the use and design of sites within the city of Hobart’s conservation areas. This process resulted in the creation of “conservation” zoning districts to be applied to existing and future managed conservation wetlands, river basins, and lands surrounding Lake George.

The new district identifies permitted uses and activities and specifies the need for and rules governing natural resource management plans. The sub-area plan identifies areas where conservation is needed to protect the Lake George watershed and preserve local habitats, and determines parcels where conservation and development partnerships could occur. Illustrative renderings for priority sites within the sub-area show areas where low-impact development best practices were identified. Wetlands are vital for water quality, acting as natural filters and buffers. They are also important for nesting birds and supporting threatened and endangered species, notes IN.gov
LOCAL Forested Wetlands, Scrub-Shrub Wetlands, Emergent Wetlands, Woody Vegetation Herbaceous Vegetation
WITHIN ONE HALF MILE INCLUDE:
Dorothy Buell Oak Savannah Preserve on Lake George,
DNR Nature Preserve and the
Indiana Dunes Nature Preserve, AKA Hobart Prairie Grove And Hobart Woodland Trail
(It is noted for high biodiversity, containing over 343 native plant species and unique clay/silt soil)
Gordon & Faith Greiner Nature Preserve, Operated by Shirley Heinze
a part of Shirley Heinze Land Trust
Deep River Wetlands AND the
Hobart Marsh Area, ( encompasses nearly 750 acres of permanently protected marsh ecosystem adjacent to Lake George with bottomland forests, restored prairie-savannas and threatened bird species )
Deep River Watershed (A half-mile buffer was established around the Deep River outstanding river reach using GIS to identify the Deep
River Outstanding River Corridor. This buffer width effectively captured a high percentage of natural land cover
areas, core forests, documented high quality natural communities and ETR species, and managed lands along Deep
River.)
and

Get Deep River’s (USGS) United States Geological Survey info here
Lake George (Shown Above) USCS National Water Dashboard Recording on March 23/ 2026
You can find the USGS Interactive Map here
USGS FACEBOOK PAGE
Just Because You Don’t See Water, Doesn’t Mean it’s Not A wetland:
Certain types of wetlands have natural wet-dry cycles such as ephemeral wetlands and fens and therefore may appear dry at the surface. Ephemeral wetlands are isolated ecosystems that temporarily hold water in spring and early summer, while fens are ground water fed and receive their water and nutrients from below the surface.





















































