Spatial Coverage
- Madison County2
- Manitoba2
- Michigan, Lake2
- Mississippi River2
- North Atlantic Ocean2
- North Carolina2
- Nueces Bay (Tex.)2
- Ontario, Lake (N.Y. and Ont.)2
- Pacific Coast (Calif.)2
- Pacific Ocean2
- Pakistan.2
- Patapsco Aquifer2
- Puget Sound (Wash.)2
- San Bernardino County2
- South Dakota2
- Texas2
- Trinity Bay (Tex.)2
- Wyoming2
- Afghanistan1
- Afghanistan.1
