> Canonical: https://nyparks.org/trails/white-diamond-trail-osm-9447764
> Content revision: 2026-10-20T16:31:28.505Z

HIKING ROUTE

# White Diamond Trail

Rockland · approximately 0.8 mapped miles in New York

[Rockland parks ↗](https://nyparks.org/counties/rockland)

## The mapped route.

Only the mapped New York portions are shown. Mileage is estimated from those lines, including mapped branches, and may differ from an official trail length. Disconnected lines are not instructions to cross unmapped land.

[View this route on OpenStreetMap ↗](https://www.openstreetmap.org/relation/9447764)

## Plan before you walk.

**Mapped distance**: 0.8 miles in New York; approximate

**Route type**: Hiking route

**OSM walking network**: Local

This route comes from community-maintained map data. Access, trail condition, difficulty, seasonal restrictions, and the route’s continuity have not been independently verified. Follow current official maps, signs, and closures.

## Parks along the mapped route.

Links indicate a mapped boundary overlap, not confirmation that the park manages every segment.

[Harriman State Park ↗](https://nyparks.org/parks/harriman-state-park)

## Notices from parks along this route.

Each notice retains its own park, area, or regional scope. These notices do not establish a closure of the entire trail.

Area closureTrails & roads

### Victory Trail connections near Lake Sebago closed

Applies to the named area

- [Victory Trail connections near Lake Sebago](https://nyparks.org/parks/harriman-state-park)Within Harriman State Park

- Victory Trail connections near Lake Sebago

- Victory Trail connections near Lake Sebago

Two Victory Trail connections near the northwest corner of Lake Sebago are temporarily closed for construction tied to beach-facility rehabilitation. State Parks expects the closures to extend through the middle of 2027; the estimate is not a confirmed reopening date.

[Read the official notice: New York State Parks visitor directory ↗](https://parks.ny.gov/visit/state-parks/harriman-state-park)Source checked Oct 20, 2026

Visitor informationPests & invasive species

### Lake Sebago hydrilla treatment plan

Applies to the named area

- [Lake Sebago](https://nyparks.org/parks/harriman-state-park)Within Harriman State Park

- Lake Sebago

State Parks reports that hydrilla was found in Lake Sebago in late 2022 and that a five-year treatment plan began in June 2023. The agency says notice signs will be posted at public access points. This is lake-specific information, not a park-wide closure.

[Read the official notice: New York State Parks visitor directory ↗](https://parks.ny.gov/visit/state-parks/harriman-state-park)Source checked Oct 20, 2026

## Source & map data

Trail data © [OpenStreetMap contributors](https://www.openstreetmap.org/copyright), under the [Open Database License (ODbL)](https://opendatacommons.org/licenses/odbl/1-0/). [OSM relation 9447764](https://www.openstreetmap.org/relation/9447764) · source snapshot Oct 19, 2026 · imported Oct 19, 2026.

[Download this trail geometry (GeoJSON)](https://nyparks.org/data/trails/osm-relation-9447764.geojson) · [Markdown version](https://nyparks.org/trails/white-diamond-trail-osm-9447764.md) · [Suggest a correction](https://nyparks.org/about#corrections)