Waterbodies Resistance Layer for Coastal Marten Connectivity Modeling in OR and CA

A geospatial raster layer representing waterbodies as a resistance component for a coastal marten connectivity model. The data was developed from the USGS National Hydrography Dataset, specifically extracting LakePond, Reservoir, Estuary, and SwampMarsh features from Oregon and California. The layer was last updated on March 4, 2026, by the Department of the Interior.

Use Cases

• Modeling landscape resistance to marten movement based on waterbody features.
• Integrating hydrographic data into a broader connectivity analysis as described in the project report.
• Assessing the impact of specific waterbody types (LakePond, Reservoir) as movement impediments.
• Repurposing the extracted NHD waterbody features for other regional ecological models.

Strengths

• Derived from the authoritative USGS National Hydrography Dataset (2013).
• Specific resistance value (500 per pixel) assigned to LakePond and Reservoir features is documented.
• Development process is described, including source datasets and feature types considered.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and file size are unknown, which may limit suitability assessment.
• The description notes that SwampMarsh and Estuary feature types were ultimately excluded from the final surface.

Provenance

Source

Department of the Interior, using the USGS National Hydrography Dataset.

Collection Method

Features extracted from OR and CA NHD geodatabases, converted to rasters, mosaicked, and clipped to a modeling extent.

Freshness

Last updated 2026-03-04 08:21:28.403791; freshness should be verified.

Geography

Modeling extent covering parts of Oregon and California, USA.