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- MassachusettsWorcester County4
- Iowa3
- New HampshireSullivan County3
- VermontWindsor County3
- CyprusNicosia2
- Great Salt Lake (Utah)2
- High Plains Aquifer2
- Mars (Planet)2
- NebraskaSandhills2
- Sandhills (Neb.)2
- VermontOrange County2
- VermontWashington County2
- AlabamaCarroll Creek1
- Alaska Peninsula (Alaska)1
- AlaskaAlaska Peninsula1
- AlaskaHolitna River Watershed1
- AlaskaSeward Peninsula1
- ArkansasBeaver Lake1
- ArkansasMillwood Lake1
- Bayfield County (Wis.)1