While the majority of the preserves are open, ACRES members also protect land that is not open to the public.

Most closed preserves are life estates, where a land donor lives and retains land use rights. Some preserves are closed to protect sensitive areas or natural features, or because trail installation is not possible.

Allen County


NameAcreage
Cedar Creek Bottoms Nature Preserve36
Cedar Creek Nature Preserve58.147
Chuck and Sharon Bodenhafer7.595
D and J Eel River21.5
Dorothy and Ray Garman Nature Preserve83.737
Ellenwood Nature Preserve4.258
Emanuel M. Popp Nature Preserve76
Emilian Woods11.482
Founders Forest58.835
James M. & Patricia D. Barrett Nature Preserve87
Jessie’s Woods Nature Preserve30
Little Cedar Creek Wildlife Sanctuary Nature Preserve19
Mackel Nature Preserve28.375
Maumee River Overlook0.9
Mills-Black Nature Preserve11.16
Orion Woods30
Raymond and Mildred Wetter Nature Preserve40
Shure Acre1.085

Blackford County


NameAcreage
Kenneth Goble Nature Preserve97.64

Defiance County, Ohio


NameAcreage
Preston Island23

DeKalb County


NameAcreage
Claxton Woods93.03
James M. & Patricia D. Barrett Oak Hill Nature Preserve140.37
Sliger Protected Land17.64

Elkhart County


NameAcreage
Caprarotta Family Natural Area29.38
Eby Bog10.2

Fulton County


NameAcreage
Steve Richie36.45

Huntington County


NameAcreage
Doerman Nature Preserve37.594
Little River Landing53.29
Victory Noll Acres107

Kosciusko County


NameAcreage
Wayne Township Property47.64

Lagrange County


NameAcreage
Marsh Wren Nature Preserve50
Draper31.7
Indian River Nature Preserve29.2
Martin Lake Nature Preserve5
Quog Lake125.74
Raber32.33

Miami County


NameAcreage
Walter H. and E. Marie Myers Nature Preserve on Flowers Creek157.41

Noble County


NameAcreage
Clock Creek34.991
Kate M. Raber and James R. Johnson61.568
Nevin Nature Preserve99.32
Sauga Swamp67.89
Tamarack Nature Preserve9.786

Paulding County, Ohio


NameAcreage
Black Swamp Audubon Sanctuary74
Dunakin Woods26.036

St. Joseph County


NameAcreage
Motts56.967

Steuben County


NameAcreage
Woodland Bog20
Koch Forest24.373
Lee Family Perfect Lake Nature Preserve84

Wells County


NameAcreage
Hurb and Francis Fuller Woods55.58
Peace Farm Nature Preserve24.19

Whitley County


NameAcreage
Kessler Nature Preserve1.331
Richey Woods Nature Preserve134.718

Williams County, Ohio


NameAcreage
Montpelier Woods14