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Spatial Coverage
- Nebraska[remove]97
- South Dakota8
- Kansas6
- Missouri4
- Colorado3
- Republican River (Neb. and Kan.)3
- Adams County (Neb.)2
- Clay County (Neb.)2
- États-Unis2
- Franklin County (Neb.)2
- Iowa2
- Kearney County (Neb.)2
- Lancaster County (Neb.)2
- Nuckolls County (Neb.)2
- Phelps County (Neb.)2
- Smith County (Kan.)2
- Webster County (Neb.)2
- Wyoming2
- Alma (Neb.)1
- Banner County1
