Region
- Developing countries 8 results
- India 8 results
- Great Basin 6 results
- Alberta 2 results
- Andhra Pradesh 2 results
- Aral Sea Region (Uzbekistan and Kazakhstan) 2 results
- Arizona 2 results
- Asia, Central 2 results
- Bahraich (District) 2 results
- Brazil, Northeast 2 results
- British Columbia 2 results
- Canada, Western 2 results
- Egypt 2 results
- Entwicklungsländer 2 results
- Faizabad (District) 2 results
- Greece 2 results
- Hawaii 2 results
- Idaho 2 results
- Imperial Valley (Calif. and Mexico) 2 results
- Indonesia 2 results
- Jequetepeque River Valley 2 results
- Jequetepeque River Valley (Peru) 2 results
- Kenya 2 results
- Malaysia 2 results
- Mali 2 results
- Marakwet 2 results
- Marana, Ariz 2 results
- Mexican-American Border Region 2 results
- Middle East 2 results
- Nordeste (Bresil) 2 results
- North America 2 results
- Northeast Brazil 2 results
- Pays en voie de developpement 2 results
- Peru 2 results
- Pseira (Extinct city) 2 results
- Pseira Island 2 results
- Pseira Island (Greece) 2 results
- Region 2 results
- Rio Grande Valley (Colo.-Mexico and Tex.) 2 results
- San Antonio 2 results
- San Antonio (Tex.) 2 results
- Santa Cruz River Watershed 2 results
- Santa Cruz River Watershed (Ariz. and Mexico) 2 results
- Santa Cruz, Bassin de la (Ariz. et Mexique) 2 results
- Snake River Valley (Wyo.-Wash.) 2 results
- Texas 2 results
- Tucson <Ariz., 1990> 2 results
- United States 2 results
- West (U.S.) 2 results