Hoopes Reservoir — Rockhounding in New Castle County, Delaware

Hoopes Reservoir is a mapped rockhounding spot in New Castle County, Delaware. Reported finds include sillimanite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: New Castle County
State: Delaware
Nearest road: Centerville Road
Postcode: 19807
Coordinates: 39.78549, -75.62546

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Hoopes Reservoir

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Sillimanite Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Hoopes Reservoir.

Across the state line from Hoopes Reservoir

Hoopes Reservoir is close enough to the Delaware border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Hoopes Reservoir FAQ

Where is Hoopes Reservoir?+

Hoopes Reservoir is in New Castle County, Delaware, at 39.78549, -75.62546. Nearest road: Centerville Road.

What rocks and minerals can you find at Hoopes Reservoir?+

Hoopes Reservoir is reported to produce Sillimanite.

Is collecting allowed at Hoopes Reservoir?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

How do I get to Hoopes Reservoir?+

Open the directions link to navigate to 39.78549, -75.62546 in Google Maps. The nearest road is Centerville Road.

More rockhounding in Delaware

See all 10 Delaware spots →

Open Hoopes Reservoir on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.