NYC's Land in Delaware County: The DEP Watershed Acquisition Program

Why New York City is a major landowner in Delaware County

New York City's water supply system depends on keeping its Catskill/Delaware watershed reservoirs -- including the Cannonsville and Pepacton, both substantially or entirely within Delaware County -- clean enough that the water doesn't require full filtration, an enormously expensive treatment step the city has avoided building. Under a framework tracing to a 1997 Memorandum of Agreement and the related Filtration Avoidance Determination process with state and federal regulators, NYC committed to protecting the watershed through land protection rather than filtration infrastructure, and the state authorized the city to acquire land and conservation easements across a roughly 105,000-acre-plus target area spanning the watershed counties.

NYC's Department of Environmental Protection (DEP) has spent the years since methodically buying land -- either full fee-title purchases from willing sellers, or conservation easements that leave the underlying land in private ownership but permanently restrict certain uses -- across the watershed, always as a voluntary transaction with a willing seller at appraised value, not through eminent domain. The cumulative result in Delaware County specifically is substantial: DEP now controls close to 30% of the land area within the watershed portion of the county, whether through outright ownership or easement restriction.

What a DEP conservation easement actually restricts

A DEP conservation easement, like most conservation easements, is a permanent, recorded restriction on the deed that runs with the land regardless of who owns it -- meaning a future buyer of an easement-encumbered parcel inherits the same restrictions the original selling landowner agreed to. Typical DEP watershed easement terms restrict or prohibit new subdivision beyond a limited number of building lots, new impervious surface and stormwater-generating development, and activities that could introduce pollutants near streams and wetlands, while generally still allowing continued agriculture, forestry, and existing residential use consistent with the easement's terms.

For a landowner who sold an easement to DEP, this typically came with a lump-sum payment reflecting the difference between the land's unrestricted value and its value with the easement's restrictions in place -- a real transaction, not a taking, and one that a fair number of Delaware County landowners have voluntarily entered into over the program's multi-decade run. This research did not locate DEP's specific current per-acre easement payment rates or a parcel-level map of exactly which Delaware County tracts carry an easement versus outright DEP ownership; that level of detail requires a direct records check.

What this means for a buyer evaluating nearby land

1. Confirm whether the specific parcel you're evaluating is itself DEP-owned, DEP-easement-encumbered, or unrestricted private land -- a title search and a direct records check with the Delaware County Clerk and DEP's Bureau of Water Supply are the way to find out, since a DEP easement is a recorded restriction that survives a sale.
2. If the parcel adjoins DEP-owned land, understand that neighboring parcel will likely stay undeveloped indefinitely -- a genuine amenity for privacy and viewshed, but also a reason road access, utility extension, or future subdivision potential near that boundary may be more limited than a comparable parcel surrounded by other private land.
3. If you're a landowner rather than a buyer and are curious whether DEP would be interested in purchasing an easement on your own land, DEP's Land Acquisition Program accepts inquiries from willing sellers -- but participation is voluntary and DEP evaluates parcels against its own watershed-protection priorities, so not every offer is accepted.
4. Remember the septic layer covered on the county hub still applies regardless of easement status: any parcel in the watershed needs DEP's direct septic approval before construction, whether or not it happens to be adjacent to DEP-owned land.