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IMPROVE Aerosol Data
The raw IMPROVE aerosol data available in a variety of ASCII files. The data from each IMPROVE monitoring site is also available as an ASCII text file, and can be accessed through the links on the left-hand side of the table below that are labeled "Click Here".
Dataset Description
Latest IMPROVE Aerosol Data These data have passed the Level 0 and Level 1 quality assurance and control procedure conducted by the Crocker Nuclear Laboratory at UC Davis, but have not been QA'ed by the States, Tribes, FLM’s or CIRA.
IMPROVE Network Metadata
 		Monitoring site information including site location, history, pictures, and air quality variables samples.
Location Table Fixed format ASCII table containing monitoring site location data.
Variable Table Fixed format ASCII file with descriptions of IMPROVE measurement parameters including variable abbreviations and units definitions.  Note, some of the variable names have recently changed.  The old variable table can be found here.
Flag Table Fixed format ASCII table containing IMPROVE aerosol data flags.
Calculated Variables Fixed format ASCII table containing descriptions of calculated variables.
Entire IMPROVE Dataset Entire IMPROVE Dataset in a single file (Size: 30 MB, or 150 MB uncompressed)
IMPROVE FTP Site The FTP site where the IMPROVE ASCII data files are stored.

Download data for each IMPROVE monitoring site below.
(Click on ASCII Data column to retrieve data.  Click on column header to sort the table.)

ASCII FilesStateCodeNameLocationCountyStart_DateEnd_DateAgencySponsor
Click HereALSIPS1Sipsy WildernessBlack Warrior work center, 4 mi. N of Grayson, AL, Moulton work area, Alabama National ForestWinston County03/07/1992  U.S. Forest Service (USFS)USFS
Click HereAKSIME1Simeonof Aleutians East Borough09/10/2001  U.S. Fish and Wildlife Service (FWS)FWS
Click HereAKDENA1Denali NPPark Headquarters near water tankDenali Borough03/02/1988  U.S. National Park Service (NPS)NPS
Click HereAKTUXE1Tuxedni Kenai Peninsula Borough12/18/2001  U.S. Fish and Wildlife Service (FWS)FWS
Click HereAKTRCR1Trapper Creek Matanuska-Susitna Borough09/10/2001  U.S. National Park Service (NPS)NPS
Click HereAZBALD1Mount Baldy Apache County02/29/2000  U.S. Forest Service (USFS)USFS
Click HereAZCHIR1Chiricahua NMEntrance StationCochise County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereAZINGA1Indian GardensIndian Gardens picnic area, Grand Canyon NP, Ranger StationCoconino County10/04/1989  U.S. National Park Service (NPS)NPS
Click HereAZGRCA1Hopi Point #1Hopi Point Fire TowerCoconino County03/02/1988 08/29/1998 U.S. National Park Service (NPS) 
Click HereAZSYCA1Sycamore Canyon~10 mi S of Parks, AZ, 75 yards south of residenceCoconino County09/11/1991  U.S. Forest Service (USFS)USFS
Click HereAZGRCA2Hance Camp at Grand Canyon NP200 yds S of East Rim Drive, 1.2 miles S of Grandview Point turnoffCoconino County09/24/1997  U.S. National Park Service (NPS) 
Click HereAZTONT1Tonto NMNext to maintenance buildingGila County04/23/1988  U.S. Forest Service (USFS)NPS
Click HereAZSIAN1Sierra Ancha Gila County02/10/2000  U.S. Forest Service (USFS)USFS
Click HereAZPHOE1Phoenix Maricopa County04/25/2001  U.S. National Park Service (NPS)EPA
Click HereAZPHOE5Phoenix Colocated Sampler Maricopa County03/01/2004  UPJOHNEPA
Click HereAZMEAD1MeadviewMOHAVE: DRI TrailerMohave County09/04/1991  U.S. Environmental Protection Agency (EPA)STATE
Click HereAZPEFO1Petrified Forest NP1 mile N of Park HeadquartersNavajo County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereAZSAGU1Saguaro NM1/2 mile south of HeadquartersPima County06/04/1988  U.S. National Park Service (NPS)NPS
Click HereAZSAWE1Saguaro Westold TUMO site: maintenance yard off Kinney Rd., ~1 mi SE of jxn with Mile Wide Rd.Pima County04/19/2001  State of ArizonaSTATE
Click HereAZORPI1Organ Pipe Pima County01/15/2003  State of ArizonaSTATE
Click HereAZQUVA1Queen Valley Pinal County04/30/2001  State of ArizonaSTATE
Click HereAZIKBA1Ike's Backbone Yavapai County04/02/2000  U.S. Forest Service (USFS)USFS
Click HereAZHILL1Hillside Yavapai County04/16/2001 06/07/2005 State of ArizonaSTATE
Click HereARUPBU1Upper Buffalo Wilderness1 mile north of USFS workstation, Deer, AL, at Cooper ResidenceNewton County12/18/1991  U.S. Forest Service (USFS)USFS
Click HereARCACR1Caney Creek Polk County06/22/2000  U.S. Forest Service (USFS)USFS
Click HereCAREDW1Redwood NPOld USAF radar facility 1/2 mile E of beach and 1/2 mile N of Klamath River, near Requa, CADel Norte County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereCABLIS1Bliss SP (TRPA)Above SW shore of Lake Tahoe, CA,1/4 mile beyond headquarters on the service roadEl Dorado County11/17/1990  U.S. Forest Service (USFS)USFS
Click HereCASOLA1South Lake TahoeLakeshore ~2 mi. W of Stateline, South Lake Tahoe, CAEl Dorado County03/25/1989 06/07/1997 Tahoe Regional Planning Association (TRPA) 
Click HereCADEVA1Death Valley NPFurnace Creek, Air quality trailer at Nevares Spring Water TankInyo County10/20/1993  U.S. National Park Service (NPS)NPS
Click HereCADOLA1Dome Lands WildernessBetween Onyx, CA and Walker PassKern County08/10/1994 10/03/1998 U.S. Forest Service (USFS) 
Click HereCADOME1Dome Lands Wilderness Kern County02/01/2000  U.S. Forest Service (USFS)USFS
Click HereCASAGA1San Gabriel Los Angeles County12/15/2000  U.S. Forest Service (USFS)USFS
Click HereCAPORE1Point Reyes National SeashoreNorth District Ranger StationMarin County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereCAYOSE1Yosemite NPTurtleback Dome, 1 mi W of Tunnel ViewMariposa County03/09/1988  U.S. National Park Service (NPS)NPS
Click HereCAHOOV1Hoover Mono County07/01/2001  U.S. Forest Service (USFS)USFS
Click HereCAPINN1Pinnacles NM1/2 mile SW of Pinnacles, E entranceSan Benito County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereCAJOTR1Joshua Tree NPLost Horse Ranger StationSan Bernardino County09/04/1991 07/08/1992 U.S. National Park Service (NPS) 
Click HereCASAGO5San Gorgonio San Bernardino County    
Click HereCASAGO1San Gorgonio WildernessConverse Fire Station, Seven Oaks, CA, S. of Big Bear LakeSan Bernardino County03/02/1988  U.S. Forest Service (USFS)USFS
Click HereCAJOSH1Joshua Tree NP San Bernardino County02/22/2000   NPS
Click HereCAKAIS1Kaiser San Bernardino County01/26/2000  U.S. Forest Service (USFS)USFS
Click HereCAAGTI1Agua Tibia San Diego County11/15/2000  City of Agua TibiaUSFS
Click HereCALAVO1Lassen Volcanic NPRanger station near NW entrance, Manzanita Lake, 25 yds SE of Fire StationShasta County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereCALABE1Lava Beds NM Siskiyou County03/25/2000  U.S. National Park Service (NPS)NPS
Click HereCATRIN1Trinity Trinity County07/19/2000  U.S. Forest Service (USFS)USFS
Click HereCASEQU1Sequoia NPResidence area, park HQ, Ash Mountain water tankTulare County03/04/1992  U.S. National Park Service (NPS)NPS
Click HereCOWHRI1White River NFUSFS Communication Facility, at Tourtellotte Park, Aspen Mt. Ski Area, Aspen, COGarfield County07/17/1993  U.S. Forest Service (USFS)USFS
Click HereCOWEMI1Weminuche WildernessUSFS fire station 30 miles N of Durango 1 mile N of Purgatory Ski AreaLa Plata County03/02/1988  U.S. Forest Service (USFS)USFS
Click HereCORMHQ1Rocky Mountain NP HQPark Headquarters at bone yardLarimer County03/02/1988 02/27/1991 U.S. National Park Service (NPS) 
Click HereCOROMO1Rocky Mountain NP3 mi S of Lily Lake VC, Ozone monitoring shelter 15 miles from ROMO1Larimer County09/19/1990  U.S. National Park Service (NPS) 
Click HereCOMEVE1Mesa Verde NPResource Management Research Area, Chapin MesaMontezuma County03/05/1988  U.S. National Park Service (NPS)NPS
Click HereCOMOZI1Mount Zirkel WildernessBuffalo Pass, NE of Steamboat Springs, CO, DRI Storm Peak/ Mount Werner FacilityRoutt County07/30/1994  U.S. Forest Service (USFS)USFS
Click HereCOSTPE1Storm PeakDRI Storm Peak, NE of Steamboat Springs, CORoutt County12/01/1993 07/27/1994 U.S. Forest Service (USFS) 
Click HereCOGRSA1Great Sand Dunes NMMonument HeadquartersSaguache County05/04/1988  U.S. National Park Service (NPS)NPS
Click HereCTMOMO1Mohawk Mt.Observation Tower, 10 mi W of Torrington, CT, Mohawk MountainLitchfield County09/28/2001  State of ConnecticutSTATE
Click HereDCWASH1Washington D.C.Natl. Capitol Region Park Police HQ, on roofDistrict of Columbia03/01/1988  U.S. National Park Service (NPS)NPS
Click HereFLCHAS1Chassahowitzka NWRMaintenance Facility, 4 mi S of Homossassa Springs, FL, 1/4 mile West of the Chassahowitzka NWR Maintenance FacilityHernando County04/03/1993  U.S. Fish and Wildlife Service (FWS)FWS
Click HereFLEVER1Everglades NPBehind Everglades Research CenterMonroe County09/28/1988  U.S. National Park Service (NPS)NPS
Click HereFLSAMA1St. Marks Wakulla County06/13/2000  U.S. Fish and Wildlife Service (FWS)FWS
Click HereGAOKEF1Okefenokee NWRHeadquarters, 3-4 mi W of GA Rt. 121Charlton County09/28/1991  U.S. Fish and Wildlife Service (FWS)FWS
Click HereGACOHU1Cohutta Whitfield County05/24/2000  U.S. Forest Service (USFS)USFS
Click HereHIMALO3Mauna Loa Observatory #3NOAA Global Monitoring SiteHawaii County04/03/1996 05/18/1996 U.S. National Park Service (NPS) 
Click HereHIMALO4Mauna Loa Observatory #4NOAA Global Monitoring SiteHawaii County04/03/1996 05/18/1996 U.S. National Park Service (NPS) 
Click HereHIHAVO1Hawaii Volcanoes NPBehind Craft CenterHawaii County03/23/1988  U.S. National Park Service (NPS)NPS
Click HereHIMALO1Mauna Loa Observatory #1NOAA Global Monitoring SiteHawaii County03/01/1995  U.S. National Park Service (NPS) 
Click HereHIMALO2Mauna Loa Observatory #2NOAA Global Monitoring SiteHawaii County03/01/1995  U.S. National Park Service (NPS) 
Click HereHIHALE1Haleakala NPOlinda Research facilityMaui County02/16/1991  U.S. National Park Service (NPS)NPS
Click HereIDCRMO1Craters of the Moon NMBehind Visitors CenterButte County05/13/1992  U.S. National Park Service (NPS)NPS
Click HereIDSCOV1ScovilleAt the Idaho National Engineering Lab facility, Atomic City, IDButte County05/13/1992 05/24/1997 U.S. Department of Energy 
Click HereIDSAWT1Sawtooth NFUSFS Stanley Station Warehouse, Stanley, IDCuster County01/26/1994  U.S. Forest Service (USFS)USFS
Click HereIDSALM1Salmon NFMountain Top Communications Facility, 6 miles SW of Salmon, IDLemhi County12/04/1993 08/06/2000 U.S. Forest Service (USFS) 
Click HereILBOND1Bondville Champaign County03/05/2001  U.S. Environmental Protection Agency (EPA)EPA
Click HereINLIVO1Livonia Washington County03/06/2001  U.S. Environmental Protection Agency (EPA)EPA
Click HereKSCEBL1Cedar Bluff Trego County06/01/2002   STATE
Click HereKYMACA1Mammoth Cave NPHouchin Meadow ozone site off Alfred Cook RoadEdmonson County09/04/1991  U.S. National Park Service (NPS)NPS
Click HereKYCADI1Cadiz Trigg County03/04/2001  U.S. Environmental Protection Agency (EPA)EPA
Click HereLABRET1Breton St. Bernard Parish06/18/2000  U.S. Fish and Wildlife Service (FWS)FWS
Click HereLABRIS1BRIS1 St. Bernard Parish01/25/2008    
Click HereLABRISXBRISX St. Bernard Parish    
Click HereLASIKE1Sikes Winn Parish03/22/2001  U.S. Environmental Protection Agency (EPA)EPA
Click HereMEPRIS1Presque Isle Aroostook County03/20/2001  Micmac TribeTRIBE
Click HereMECABA1Casco Bay Cumberland County03/20/2001  State of MaineSTATE
Click HereMEBRMA1BridgtonBridgton, MECumberland County03/20/2001  State of MaineSTATE
Click HereMEACAD1Acadia NPPark HeadquartersHancock County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereMEOLTO1Old Town Penobscot County07/07/2001  Penobscot TribeTRIBE
Click HereMEMOOS1Moosehorn NWRMcConvey Rd, about 1 mi NE of NWR Baring Unit HQWashington County12/07/1994  U.S. Fish and Wildlife Service (FWS)FWS
Click HereMACACO1Cape Cod Barnstable County04/01/2001  State of MassachusettsSTATE
Click HereMAMAVI1Martha's Vineyard Dukes County01/30/2003  Wampanoags TribeTRIBE
Click HereMAQURE1Quabbin SummitWindsor Dam on Loop Road, 5 mi W of Ware, MA, Quabbin SummitHampshire County03/20/2001  State of MassachusettsSTATE
Click HereMIISLE1Isle Royale NPNear the boat ramp on point opposite town of Eagle HarborKeweenaw County11/16/1999  U.S. National Park Service (NPS)NPS
Click HereMIISRO1Isle Royale NPWindigo Ranger StationKeweenaw County06/01/1988 07/27/1991 U.S. National Park Service (NPS) 
Click HereMISENE1Seney Schoolcraft County11/16/1999  U.S. Fish and Wildlife Service (FWS)FWS
Click HereMNBOWA1Boundary Waters Canoe AreaNADP Site, 20 mi ENE of Ely, MNCook County08/14/1991  U.S. Forest Service (USFS)USFS
Click HereMNVOYA1Voyageurs NP #11 mile NW of Visitor Center, End of road 129,St. Louis County03/02/1988 09/28/1996 U.S. National Park Service (NPS)NPS
Click HereMNVOYA2Voyageurs NP #2 St. Louis County11/16/1999  U.S. National Park Service (NPS) 
Click HereMOELDO1El Dorado Springs Cedar County06/01/2002   STATE
Click HereMOMING1Mingo Stoddard County05/24/2000  U.S. Fish and Wildlife Service (FWS)FWS
Click HereMOHEGL1Hercules-Glades12 mi E of Forsythe, MOTaney County03/02/2001  U.S. Forest Service (USFS)USFS
Click HereMTGLAC1Glacier NP2 miles NW of park HQ at Apgar stablesFlathead County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereMTFLAT1Flathead Flathead County06/19/2002   TRIBE
Click HereMTGAMO1Gates of the Mountains Lewis and Clark County07/25/2000  U.S. Forest Service (USFS)USFS
Click HereMTCABI1Cabinet Mountains Lincoln County07/24/2000  U.S. Forest Service (USFS)USFS
Click HereMTULBE1UL Bend Phillips County01/25/2000  U.S. Fish and Wildlife Service (FWS)FWS
Click HereMTMONT1Monture Powell County03/28/2000  U.S. Forest Service (USFS)USFS
Click HereMTSULA1Sula PeakSula Peak Fire Lookout, Sula, MTRavalli County08/10/1994  U.S. Forest Service (USFS)USFS
Click HereMTFOPE1Fort Peck Roosevelt County06/25/2002   TRIBE
Click HereMTNOCH1Northern Cheyenne Rosebud County06/01/2002   TRIBE
Click HereMTMELA1Medicine Lake Sheridan County12/15/1999  U.S. Fish and Wildlife Service (FWS)FWS
Click HereNVJARB1Jarbidge WildernessMahoney Forest Service Station, Jarbidge, NVElko County03/02/1988  U.S. Forest Service (USFS)USFS
Click HereNVGRBA1Great Basin NPResidence area 1 mi E of VC, 200 yds south of maintenance areaWhite Pine County05/27/1992  U.S. National Park Service (NPS)NPS
Click HereNHGRGU1Great Gulf WildernessCamp Dodge, White Mt NF, S of Gorham, NHCoos County06/10/1995  U.S. Forest Service (USFS)USFS
Click HereNHPACK1Pack Monadnock Summit Hillsborough County10/22/2007    
Click HereNJBRIG1Brigantine NWREdwin D. Forsythe NWR Headquarters, Oceanville, NJAtlantic County09/18/1991  U.S. Fish and Wildlife Service (FWS)FWS
Click HereNMGICL1Gila WildernessAbove Visitor CenterCatron County04/06/1994  U.S. Forest Service (USFS)USFS
Click HereNMSAAN1San Andres Dona Ana County10/15/1997 08/30/2000 U.S. Fish and Wildlife Service (FWS) 
Click HereNMSACR1Salt Creek Grant County04/06/2000  U.S. Fish and Wildlife Service (FWS)FWS
Click HereNMWHIT1White Mountain Lincoln County01/15/2002  U.S. Forest Service (USFS)USFS
Click HereNMBAND1Bandelier NMFire Tower near VCLos Alamos County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereNMSAPE1San Pedro Parks Rio Arriba County08/15/2000  U.S. Forest Service (USFS)USFS
Click HereNMBOAP1Bosque del Apache Socorro County04/05/2000  U.S. Fish and Wildlife Service (FWS)FWS
Click HereNMWHPE1Wheeler Peak Taos County08/15/2000  U.S. Forest Service (USFS)USFS
Click HereNYADPI1Addison Pinnacle Steuben County04/07/2001  State of New YorkSTATE
Click HereNYCOHI1Connecticut Hill Tompkins County04/11/2001  U.S. Environmental Protection Agency (EPA)EPA
Click HereNCLIGO1Linville Gorge Burke County03/29/2000  U.S. Forest Service (USFS)USFS
Click HereNCSHRO1Shining Rock WildernessFrying Pan Mountain, Skyline Drive, NCHaywood County07/20/1994  U.S. Forest Service (USFS)USFS
Click HereNCSWAN1Swanquarter Hyde County06/08/2000  U.S. Fish and Wildlife Service (FWS)FWS
Click HereNDTHRO1Theodore Roosevelt Billings County12/15/1999  U.S. National Park Service (NPS)NPS
Click HereNDLOST1LostwoodRefuge HeadquartersBurke County12/15/1999  U.S. Fish and Wildlife Service (FWS)FWS
Click HereOHQUCI1Quaker City Guernsey County05/02/2001  U.S. Environmental Protection Agency (EPA)EPA
Click HereOKWIMO1Wichita Mountains Comanche County03/01/2001  U.S. Fish and Wildlife Service (FWS)FWS
Click HereOKELLI1Ellis Ellis County06/01/2002   STATE
Click HereOKCHER1Cherokee Nation Kay County09/20/2002   TRIBE
Click HereORMOHO1Mount Hood Clackamas County03/07/2000  U.S. Forest Service (USFS)USFS
Click HereORKALM1Kalmiopsis Josephine County03/07/2000  U.S. Forest Service (USFS)USFS
Click HereORCRLA1Crater Lake NPPark Headquarters, maintenance areaKlamath County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereORTHSI1Three Sisters WildernessCarmen Smith Project EWEB facility radio transmitter bldg, 3/4 mile N. of Trail Bridge Campground, OR, Rt.126Lane County07/24/1993  U.S. Forest Service (USFS)USFS
Click HereORSTAR1Starkey Union County03/07/2000  U.S. Forest Service (USFS)USFS
Click HereORHECA1Hells Canyonhilltop W of Oxbow DamWallowa County08/01/2000  U.S. Forest Service (USFS)USFS
Click HerePAAREN1Arendtsville Adams County04/13/2001  U.S. Environmental Protection Agency (EPA)EPA
Click HereSCROMA1Cape Romain NWRMoores Landing, Cape Romain NWR, SC , Refuge maintenance areaCharleston County09/03/1994  U.S. Fish and Wildlife Service (FWS)FWS
Click HereSDWICA1Wind Cave Custer County12/15/1999  U.S. National Park Service (NPS)NPS
Click HereSDBADL1Badlands NPPark HeadquartersPennington County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereTNGRSM1Great Smoky Mountains NPLook Rock, 8 mi S of Maryville, TNSevier County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereTXBIBE1Big Bend NP3 miles SE of Panther Junction, at water wellBrewster County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereTXGUMO1Guadalupe Mountains NP10 miles SW of Frijole at FAA siteCulberson County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereUTBRCA1Bryce Canyon NP2.5 miles S of VC at water tanks, near Sunset PointGarfield County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereUTARCH1Arches NPDevils Garden CampgroundGrand County03/02/1988 05/16/1992 U.S. National Park Service (NPS) 
Click HereUTCANY1Canyonlands NPIsland in the Sky VCSan Juan County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereUTLOPE1Lone Peak WildernessTimpanogos Cave, NMUtah County12/01/1993 08/30/2001 U.S. Forest Service (USFS) 
Click HereUTZION1Zion Washington County03/21/2000 08/15/2004 U.S. National Park Service (NPS)NPS
Click HereUTCAPI1Capitol Reef NP Wayne County03/28/2000  U.S. National Park Service (NPS)NPS
Click HereVTLYBR1Lye Brook WildernessMount Equinox, at the windmills, Manchester, VTBennington County09/21/1991  U.S. Forest Service (USFS)USFS
Click HereVTPMRF1Proctor Maple R. F.5 Miles N. of Underhill, VT, 2 mi NE of Underhill Center, VTChittenden County12/22/1993  State of VermontSTATE
Click HereVAJARI1James River Face Wilderness Bedford County06/03/2000  U.S. Forest Service (USFS)USFS
Click HereVAJEFF1Jefferson NFArnold Valley - Puritan Tract, Natural Bridge, VAGiles County09/03/1994 05/20/2000 U.S. Forest Service (USFS) 
Click HereVASHEN1Shenandoah NPBig Meadows 1/2 mile N of Visitor CenterPage County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereWAOLYM1Olympic Clallam County07/11/2001  U.S. National Park Service (NPS)NPS
Click HereWAPUSO1Puget SoundNext to reservoir East of I-5 on Union Hill, downtown Seattle, WAKing County03/23/1996  U.S. Forest Service (USFS)EPA
Click HereWASNPA1Snoqualmie PassDOT Radio Facility, Snoqualmie Ski Area, WA , 150 yards from Big Bull LiftKittitas County07/03/1993  U.S. Forest Service (USFS)USFS
Click HereWACORI1Columbia River GorgeRt. turn off west, SR-14 0.7 miles west of Wishram, WA., 1.5 miles NW of Wilsham, WAKlickitat County06/26/1993  U.S. Forest Service (USFS)USFS
Click HereWACOGO1Columbia Gorge #1 Klickitat County09/16/1996  WASHINGTON STATE DEPARTMENT OF ECOLOGYUSFS
Click HereWAWHPA1White Pass Lewis County02/15/2000  U.S. Forest Service (USFS)USFS
Click HereWAPASA1PasaytenLoup-loup ski area, Hwy 20 E of Twisp, WAOkanogan County11/15/2000  U.S. Forest Service (USFS)USFS
Click HereWAMORA1Mount Rainier NPPark HQ, Tahoma Woods, Ashford, WAPierce County03/02/1988  U.S. National Park Service (NPS)NPS
Click HereWASPOK1Spokane Res. Spokane County07/11/2001 06/28/2005 Spokane TribeTRIBE
Click HereWANOCA1North CascadesRoss DamWhatcom County03/01/2000  U.S. National Park Service (NPS)NPS
Click HereWALYND1LyndenFCC Monitoring Station W of LyndonWhatcom County10/16/1996 08/30/1997 NORTHWEST AIR POLLUTION AUTHORITY 
Click HereWVDOSO1Dolly Sods WildernessBearden Knob, 3 mi SE of Davis, WVTucker County09/25/1991  U.S. Forest Service (USFS)USFS
Click HereWYBRLA1Brooklyn LakeSnowy Range, 15 miles NW of Centennial, WY, at Brooklyn LakeAlbany County09/01/1993 12/29/2003 U.S. Forest Service (USFS) 
Click HereWYTHBA1Thunder Basin Campbell County06/01/2002   STATE
Click HereWYCLPE1Cloud Peak Johnson County06/22/2002   STATE
Click HereWYYELL1Yellowstone NP 1SW of Fishing Bridge, Yellowstone Lake above maintenance yard and seasonal employee housing/campground. , Lake Ranger OfficePark County03/09/1988 07/01/1996 U.S. National Park Service (NPS)NPS
Click HereWYNOAB1North AbsarokaDead Indian Summit, NW of Cody, WYPark County01/25/2000  U.S. Forest Service (USFS)USFS
Click HereWYYELL2Yellowstone NP 2 Park County07/01/1996  U.S. National Park Service (NPS) 
Click HereWYBRID1Bridger WildernessWhite Pine ski area 10 miles E of Pinedale, WY, near Fremont LakeSublette County03/02/1988  U.S. Forest Service (USFS)USFS
Click HereMIDETR1Detroit  11/08/2003   STN
Click HereIALASU1Lake Sugema  06/01/2002 11/30/2004  STATE
Click HereIAVILA1Viking Lake  06/01/2002   STATE
Click HereIALASU2Lake Sugema  12/02/2004    
Click HereKSSAFO1Sac and Fox  06/19/2002   TRIBE
Click HereKSTALL1Tallgrass  09/02/2002   STATE
Click HereTXHOUS1Houston  05/06/2004 09/05/2005  STN
Click HereUTZICA1Zion Canyon  12/01/2002    
Click HereAKAMBL1Ambler  07/02/2004 08/09/2005  NPS
Click HereAKPETE1Petersburg  07/02/2004   USFS
Click HereGAATLA1Atlanta  04/30/2004   STN
Click HereHIHACR1Haleakala Crater  01/23/2007    
Click HereONEGBE1Egbert  05/01/2005   SPECIAL
Click HereVIVIIS1Virgin Islands NPBiosphere Reserve Complex, Lind Point, St. John, VI 10/13/1990  U.S. National Park Service (NPS)NPS
Click HereMNGRRI1Great River Bluffs  07/25/2002   STATE
Click HereMNBLMO1Blue Mounds  07/25/2002   STATE
Click HereNENEBR1Nebraska NF  07/31/2002   STATE
Click HereNECRES1Crescent Lake  07/31/2002   STATE
Click HereNEOMAH1Omaha  08/07/2003   TRIBE
Click HereAZDOUG1Douglas  06/02/2004   STATE
Click HereNVWARI1Walker River Paiute Tribe  06/02/2003 11/07/2005  TRIBE
Click HereCAFRES1Fresno  09/03/2004    
Click HereCARUBI1Rubidoux  09/03/2004 09/05/2005  STN
Click HereILCHIC1Chicago  11/11/2003 09/05/2005  STN
Click HereALBIRM1Birmingham  04/30/2004   STM
Click HereMDBALT1Baltimore  06/02/2004   SPECIAL
Click HereMDFRRE1Frostberg Reservoir (Big Piney Run)  04/18/2004   STATE
Click HereCOSHMI1Shamrock Mine  08/01/2004    
Click HereNYNEYO1New York City     STN
Click HereWAMAKA1Makah Tribe  08/24/2006    
Click HereCARAFA1San Rafael  02/02/2000  U.S. Forest Service (USFS)USFS
Click HerePAMKGO1M.K. Goddard  04/17/2001  U.S. Environmental Protection Agency (EPA)EPA
Click HerePAPITT1Pittsburgh  04/18/2004   STN