NLCD Land Cover by Block Group
How much of each neighbourhood-sized area of Ohio is developed, farmed, forested, wetland or water, and how much of it is paved or roofed, for every year since 1985, added up from the U.S. Geological Survey's 30-metre satellite land cover map. Use it to follow development and the loss of farmland or forest across counties, cities and townships over four decades, to compare places by how built-up they are, and to map land cover as a choropleth.
- Published by
- U.S. Geological Survey
- Source
- NLCD (USGS annual land cover)
- Original data
- www.mrlc.gov
- Terms of use
- CC0 1.0 Universal
- On the map
- No shapes of its own
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The goal of this project is to provide the Nation with complete, current, and consistent public domain information on its land use and land cover.
Annual NLCD uses a modernized, integrated approach to map, monitor, synthesize, and understand the complexities of land use, cover, and condition change.
Fields
What each record holds, as the publisher describes it: 19 fields.
| Field | Description |
|---|---|
(block group) | 2020 block group; joins oh_census_block_groups.geoid |
(file year) | Calendar year the land cover describes |
class 11 | Open water, m² |
class 12 | Perennial ice and snow, m² |
class 21 | Developed, open space, m² |
class 22 | Developed, low intensity, m² |
class 23 | Developed, medium intensity, m² |
class 24 | Developed, high intensity, m² |
class 31 | Barren land (rock, sand, clay), m² |
class 41 | Deciduous forest, m² |
class 42 | Evergreen forest, m² |
class 43 | Mixed forest, m² |
class 52 | Shrub and scrub, m² |
class 71 | Grassland and herbaceous, m² |
class 81 | Pasture and hay, m² |
class 82 | Cultivated crops, m² |
class 90 | Woody wetlands, m² |
class 95 | Emergent herbaceous wetlands, m² |
FctImp | Impervious surface, m²: each cell's percent × 9 m², summed |