Parcel data for small hydro developers
1,148,686 land parcels of 5 acres or more with a mapped stream crossing the boundary, in 303 counties.
One county: $50 a month. A whole state: $400 a month or less. Searching on the map is free.
Open the free map PricingWhat you can do with it
Find the parcels a stream with usable drop runs through.
What each parcel record holds
Measured for each parcel: the distance to the nearest stream, the length of stream on the parcel, the stream's elevation drop and channel slope where the elevation data allows it, the share in the 100-year flood zone and the share that is wetland. Every record also holds the property address, the owner of record and the mailing address where the record has them (most Maryland, New Jersey and Washington records have no owner name; most Washington records have no mailing address), the land use code and the acreage. The parcel record and the earth observation catalog list every field.
The 20 counties with the most
| County | 5+ acres, a stream crossing the parcel | All parcels |
|---|---|---|
| Okanogan County, WA | 22,022 | 57,587 |
| Stevens County, WA | 15,447 | 42,942 |
| Spokane County, WA | 13,913 | 214,027 |
| Lewis County, WA | 13,779 | 57,957 |
| Worcester County, MA | 13,046 | 320,086 |
| Grant County, WI | 12,736 | 48,765 |
| Fergus County, MT | 12,208 | 20,862 |
| Marathon County, WI | 11,553 | 83,708 |
| Yakima County, WA | 11,403 | 105,423 |
| Whitman County, WA | 10,961 | 34,994 |
| Valley County, MT | 10,627 | 18,143 |
| King County, WA | 10,433 | 635,076 |
| Big Horn County, MT | 10,365 | 14,988 |
| Flathead County, MT | 10,246 | 84,141 |
| Phillips County, MT | 10,039 | 14,704 |
| Vernon County, WI | 9,505 | 35,554 |
| Beaverhead County, MT | 9,441 | 16,143 |
| Clark County, WI | 9,413 | 35,567 |
| Snohomish County, WA | 9,347 | 318,589 |
| Lewis and Clark County, MT | 8,564 | 40,205 |
Acreage counts take each boundary once: a condominium complex is one land parcel however many units it is sold as.
Every county: parcel data by county. States: Connecticut, District of Columbia, Florida, Maryland, Massachusetts, Montana, New Jersey, Washington, Wisconsin.