| Site ID | Site Name | County | State | Latitude | Longitude | Elev. (m) | Start Date | Stop Date | Status |
| AK95 | Utqiagvik | | AK | 71.3230 | -156.6114 | | 10/08/2021 | | A |
| HI00 | Mauna Loa | Hawaii | HI | 19.5392 | -155.5792 | 3399 | 12/30/2010 | | A |
| MC03 | Mexico City - SEDEMA | Gustavo A. Madero | MC | 19.4838 | -99.1473 | 2255 | 06/05/2023 | | A |
| MD08 | Piney Reservoir | Garrett | MD | 39.7053 | -79.0122 | 769 | 01/01/2008 | | A |
| MD98 | Beltsville Second Instrument | Prince Georges | MD | 39.0280 | -76.8171 | 46 | 01/26/2007 | | A |
| NJ30 | New Brunswick | Middlesex | NJ | 40.4728 | -74.4226 | 21 | 10/01/2015 | | A |
| NJ54 | Elizabeth Lab | Union | NJ | 40.6414 | -74.2084 | 11 | 10/01/2015 | | A |
| NY20 | Huntington Wildlife | Essex | NY | 43.9731 | -74.2231 | 500 | 11/21/2007 | | A |
| NY98 | Whiteface Mountain | Essex | NY | 44.3933 | -73.8594 | 610 | 09/30/2020 | | A |
| OH02 | Athens Super Site | Athens | OH | 39.3078 | -82.1182 | 275 | 01/01/2007 | | A |
| OH52 | South Bass Island | Ottawa | OH | 41.6582 | -82.8270 | 177 | 12/31/2011 | | A |
| AK03 | Denali National Park | Denali | AK | 63.7232 | -148.9676 | 661 | 03/10/2014 | 12/21/2018 | I |
| AL03 | Centreville | Bibb | AL | 32.9034 | -87.2499 | 135 | 01/01/2016 | 11/01/2016 | I |
| AL19 | Birmingham | Jefferson | AL | 33.5530 | -86.8148 | 200 | 01/01/2009 | 06/30/2016 | I |
| CA48 | Elkhorn Slough | Monterey | CA | 36.8100 | -121.7800 | 15 | 01/01/2010 | 01/01/2011 | I |
| FL96 | Pensacola | Escambia | FL | 30.5499 | -87.3750 | 45 | 01/01/2009 | 10/01/2016 | I |
| GA40 | Yorkville | Paulding | GA | 33.9282 | -85.0451 | 395 | 01/01/2009 | 10/01/2016 | I |
| IL11 | Bondville | Champaign | IL | 40.0528 | -88.3719 | 212 | 01/01/2017 | 12/31/2019 | I |
| IN21 | Clifty Falls State Park | Jefferson | IN | 38.7622 | -85.4202 | 256 | 04/29/2016 | 06/30/2020 | I |
| IN34 | Indiana Dunes National Lakeshore | Porter | IN | 41.6318 | -87.0881 | 208 | 10/02/2018 | 12/31/2019 | I |
| MD99 | Beltsville | Prince Georges | MD | 39.0280 | -76.8171 | 46 | 11/07/2006 | 07/17/2014 | I |
| ME97 | Presque Isle | Aroostook | ME | 46.6964 | -68.0332 | 165 | 12/06/2013 | 12/30/2015 | I |
| MI09 | Douglas Lake | Cheboygan | MI | 45.5608 | -84.6783 | 238 | 08/11/2015 | 03/18/2016 | I |
| MS12 | Grand Bay NERR | Jackson | MS | 30.4294 | -88.4277 | 2 | 09/29/2006 | 03/31/2020 | I |
| MS99 | Grand Bay NERR Second Instrument | Jackson | MS | 30.4294 | -88.4277 | 2 | 10/18/2007 | 11/12/2012 | I |
| NH06 | Thompson Farm | Strafford | NH | 43.1100 | -70.9500 | | 01/01/2009 | 11/29/2011 | I |
| NJ05 | Brigantine | Atlantic | NJ | 39.4649 | -74.4488 | 1 | 06/01/2009 | 10/01/2015 | I |
| NS01 | Kejimkujik National Park | Queens | NS | 44.4328 | -65.2056 | 155 | 01/26/2009 | 11/27/2018 | I |
| NY06 | Bronx | Bronx | NY | 40.8680 | -73.8782 | 68 | 08/27/2008 | 06/30/2020 | I |
| NY43 | Rochester | Monroe | NY | 43.1463 | -77.5482 | 136 | 09/26/2008 | 06/30/2020 | I |
| NY95 | Rochester_B | Monroe | NY | 43.1463 | -77.5481 | 136 | 11/21/2007 | 11/13/2009 | I |
| OK99 | Stilwell | Adair | OK | 35.7508 | -94.6700 | 299 | 10/20/2008 | 05/31/2015 | I |
| PA13 | Allegheny Portage Railroad National Historic Site | Cambria | PA | 40.4570 | -78.5600 | 739 | 03/20/2009 | 09/09/2011 | I |
| UT96 | Antelope Island | Davis | UT | 41.0467 | -112.0248 | 1287 | 06/18/2009 | 06/30/2011 | I |
| UT97 | Salt Lake City | Salt Lake | UT | 40.7118 | -111.9609 | 1297 | 11/23/2008 | 01/01/2018 | I |
| VT99 | Underhill | Chittenden | VT | 44.5283 | -72.8684 | 399 | 01/01/2008 | 01/04/2016 | I |
| WI07 | Horicon Marsh | Dodge | WI | 43.4660 | -88.6210 | 287 | 01/02/2011 | 12/31/2017 | I |
| WV99 | Canaan Valley Institute | Tucker | WV | 39.1191 | -79.4522 | 988 | 01/01/2007 | 10/14/2012 | I |
