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Tidal Wetlands 1990s

Metadata Updated: February 9, 2024

In 1995 it was recognized that current Connecticut tidal wetland boundary information was critical to ensure the appropriate management and protection of the tidal wetlands resource. At this time the 1970's maps had become increasingly dated, with the growth of new tidal wetland areas and the restoration of others. The maps were contributing to the confusion over state versus municipal wetland jurisdiction. It was in this climate that the current project was conceived. The aim of this mapping effort was to provide current, geometrically correct tidal wetland map products that would serve as a guide to the jurisdictional boundaries for federal, state and municipal regulators and private land holders. 'Tidal Wetlands' are defined as follows: 'Tidal Wetlands' means 'wetland' as defined by C.G.S.Sec. 22a-29. C.G.S.Sec.22a-93(7)(E). 'Wetland' means those areas which border or lie beneath tidal waters, such as, but not limited to banks, bogs, salt marshes, swamps, meadows, flats, or other low lands subject to tidal action, including those areas now or formerly connected to tidal waters, and whose surface is at or below an elevation of one foot above local extreme high water; and upon which may grow or be capable of growing some but not necessarily all, of the following: (See the statute for a complete listing of tidally influenced plant species) C.G.S.Sec.22a-29(2). Thus, the actual tidal wetland boundary is determined by the application of these criteria, including identifying the presence or absence of tidally influenced plants. While the field determination of these criteria results in the most accurate tidal wetland boundary delineation, the identification of different plant types and low lying areas can also be achieved, at a high level of accuracy, through the use of large scale, stereo aerial photography. This latter method was determined as being the most efficient method to delineate vegetated tidal wetlands across the entire state of Connecticut. It should be noted that similarly to the previous tidal wetlands mapping efforts, no attempt was made to delineate those areas that were formerly connected to tidal flow, as these areas are difficult to identify by either field or photo interpretation techniques. The area mapped in the Tidal Wetlands 1990's datalayer includes all tidal, coastal and navigable waters and tidal wetlands of Connecticut with the exception of the Lower Connecticut River, which was mapped as part of the 1994 Ramsar Convention program. Between both programs, a total of 15,178 acres of tidal wetlands were mapped.

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than License: Creative Commons CCZero

Downloads & Resources


Metadata Created Date September 2, 2022
Metadata Updated Date February 9, 2024

Metadata Source

Harvested from Connecticut Data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date September 2, 2022
Metadata Updated Date February 9, 2024
Publisher Department of Energy & Environmental Protection
Data First Published 2018-12-20
Data Last Modified 2019-10-17
Category geospatial
Public Access Level public
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id beddf2fd-468b-4894-9e0f-3ede295e20f8
Harvest Source Id 36c82f29-4f54-495e-a878-2c07320bf10c
Harvest Source Title Connecticut Data.json
Homepage URL
Metadata Type geospatial
Old Spatial -73.6582,40.9805,-71.8246,41.7491
Source Datajson Identifier True
Source Hash 4e0a5e20bcc3495d4a2db6d424fcbf2cc68a525888fe57b4f7a072c04c233a16
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -73.6582, 40.9805, -73.6582, 41.7491, -71.8246, 41.7491, -71.8246, 40.9805, -73.6582, 40.9805}

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