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IMPROVE Data in ASCII text files:  The raw IMPROVE aerosol data, as well as various metadata, can be viewed in tabular format or downloaded to your computer.

Select from the available Screen or Link fields to view respective metadata:

ScreenLinkData SetDescription
DisplaySite Location TableMonitoring site metadata including latitude, longitude, and elevation. Screen output provides Additional Links to site specific ASCII files.
Show LinkPreliminary IMPROVE Aerosol Data'Preliminary 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.
Show LinkEntire IMPROVE DatasetEntire IMPROVE Dataset in a single file (40 MB zip file)
Show LinkGo to FTP siteThe FTP site were the IMPROVE ASCII data files are stored.
DisplayMeasurement ParametersDescriptions of IMPROVE measurement parameters including variable abbreviations and units definitions. Note, some of the variable names have recently changed.
DisplayCalculated VariablesDescriptions of calculated variables.
DisplayFlag TableIMPROVE aerosol data flags and corresponding VIEWS Status Flags.
DisplayMonthly fRH at IMPROVE SitesMonthly fRH values from SAIC grid at IMPROVE monitoring locations.
DisplayMonthly fRH at Class I areasMonthly fRH values from SAIC grid for Class I areas (based on the location of the representative IMPROVE monitoring site).
Show LinkMetadataMonitoring site information including site location, history, pictures, and air quality variables samples.
DisplayMethodsIMPROVE aerosol sampling and analysis methods.
DisplayRHR AggregationsData aggregations for Regional Haze Rule (RHR) metrics.
Select screen display (datagrid display allows sorting) and download options:
Screen Display: Download:
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ASCII FileCodeStateNameLocationCountyStartEndLatitudeLongitudeElevation(MSL)AgencySponsor
ClickSIPS1ALSipsy WildernessBlack Warrior work center, 4 mi. N of Grayson, AL, Moulton work area, Alabama National ForestWinston County03/07/1992  34.3433-87.3388286U.S. Forest Service (USFS)USFS
ClickSIME1AKSimeonof Aleutians East Borough09/10/2001  55.3255-160.506357U.S. Fish and Wildlife Service (FWS)FWS
ClickDENA1AKDenali NPPark Headquarters near water tankDenali Borough03/02/1988  63.7233-148.9675658U.S. National Park Service (NPS)NPS
ClickTUXE1AKTuxedni Kenai Peninsula Borough12/18/2001  59.9925-152.665615U.S. Fish and Wildlife Service (FWS)FWS
ClickTRCR1AKTrapper Creek Matanuska-Susitna Borough09/10/2001  62.3153-150.3156155U.S. National Park Service (NPS)NPS
ClickBALD1AZMount Baldy Apache County02/29/2000  34.0584-109.44062509U.S. Forest Service (USFS)USFS
ClickCHIR1AZChiricahua NMEntrance StationCochise County03/02/1988  32.0094-109.3891555U.S. National Park Service (NPS)NPS
ClickGRCA1AZHopi Point #1Hopi Point Fire TowerCoconino County03/02/1988 08/29/1998 36.0658-112.15392164U.S. National Park Service (NPS) 
ClickSYCA1AZSycamore Canyon~10 mi S of Parks, AZ, 75 yards south of residenceCoconino County09/11/1991  35.1406-111.96922046U.S. Forest Service (USFS)USFS
ClickGRCA2AZHance Camp at Grand Canyon NP200 yds S of East Rim Drive, 1.2 miles S of Grandview Point turnoffCoconino County09/24/1997  35.9731-111.98412267U.S. National Park Service (NPS) 
ClickINGA1AZIndian GardensIndian Gardens picnic area, Grand Canyon NP, Ranger StationCoconino County10/04/1989  36.0778-112.12881166U.S. National Park Service (NPS)NPS
ClickTONT1AZTonto NMNext to maintenance buildingGila County04/23/1988  33.6548-111.1068775U.S. Forest Service (USFS)NPS
ClickSIAN1AZSierra Ancha Gila County02/10/2000  34.0908-110.94211600U.S. Forest Service (USFS)USFS
ClickPHOE1AZPhoenix Maricopa County04/25/2001  33.5038-112.0958342U.S. National Park Service (NPS)EPA
ClickPHOE5AZPhoenix Colocated Sampler Maricopa County03/01/2004  33.5038-112.0958342UPJOHNEPA
ClickMEAD1AZMeadviewMOHAVE: DRI TrailerMohave County09/04/1991  36.0193-114.0684902U.S. Environmental Protection Agency (EPA)STATE
ClickPEFO1AZPetrified Forest NP1 mile N of Park HeadquartersNavajo County03/02/1988  35.0777-109.76921766U.S. National Park Service (NPS)NPS
ClickSAGU1AZSaguaro NM1/2 mile south of HeadquartersPima County06/04/1988  32.1746-110.7371941U.S. National Park Service (NPS)NPS
ClickSAWE1AZSaguaro Westold TUMO site: maintenance yard off Kinney Rd., ~1 mi SE of jxn with Mile Wide Rd.Pima County04/19/2001  32.2486-111.2178714State of ArizonaSTATE
ClickORPI1AZOrgan Pipe Pima County01/15/2003  31.9506-112.8016504State of ArizonaSTATE
ClickQUVA1AZQueen Valley Pinal County04/30/2001  33.2939-111.2858661State of ArizonaSTATE
ClickIKBA1AZIke's Backbone Yavapai County04/02/2000  34.3405-111.68321298U.S. Forest Service (USFS)USFS
ClickHILL1AZHillside Yavapai County04/16/2001 06/07/2005 34.4289-112.96281511State of ArizonaSTATE
ClickUPBU1ARUpper Buffalo Wilderness1 mile north of USFS workstation, Deer, AL, at Cooper ResidenceNewton County12/18/1991  35.8258-93.203723U.S. Forest Service (USFS)USFS
ClickCACR1ARCaney Creek Polk County06/22/2000  34.4544-94.1429683U.S. Forest Service (USFS)USFS
ClickREDW1CARedwood 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  41.5608-124.0839244U.S. National Park Service (NPS)NPS
ClickBLIS1CABliss SP (TRPA)Above SW shore of Lake Tahoe, CA,1/4 mile beyond headquarters on the service roadEl Dorado County11/17/1990  38.9761-120.10252131U.S. Forest Service (USFS)USFS
ClickSOLA1CASouth Lake TahoeLakeshore ~2 mi. W of Stateline, South Lake Tahoe, CAEl Dorado County03/25/1989 06/07/1997 38.9333-119.96671900Tahoe Regional Planning Association (TRPA) 
ClickDEVA1CADeath Valley NPFurnace Creek, Air quality trailer at Nevares Spring Water TankInyo County10/20/1993  36.5089-116.8478130U.S. National Park Service (NPS)NPS
ClickDOLA1CADome Lands WildernessBetween Onyx, CA and Walker PassKern County08/10/1994 10/03/1998 35.6987-118.2021914U.S. Forest Service (USFS) 
ClickDOME1CADome Lands Wilderness Kern County02/01/2000  35.7278-118.1377927U.S. Forest Service (USFS)USFS
ClickSAGA1CASan Gabriel Los Angeles County12/15/2000  34.2969-118.02821791U.S. Forest Service (USFS)USFS
ClickPORE1CAPoint Reyes National SeashoreNorth District Ranger StationMarin County03/02/1988  38.1224-122.908597U.S. National Park Service (NPS)NPS
ClickYOSE1CAYosemite NPTurtleback Dome, 1 mi W of Tunnel ViewMariposa County03/09/1988  37.7133-119.70611603U.S. National Park Service (NPS)NPS
ClickHOOV1CAHoover Mono County07/01/2001  38.0881-119.17712561U.S. Forest Service (USFS)USFS
ClickPINN1CAPinnacles NM1/2 mile SW of Pinnacles, E entranceSan Benito County03/02/1988  36.4833-121.1568302U.S. National Park Service (NPS)NPS
ClickKAIS1CAKaiser San Bernardino County01/26/2000  37.2207-119.15462598U.S. Forest Service (USFS)USFS
ClickJOTR1CAJoshua Tree NPLost Horse Ranger StationSan Bernardino County09/04/1991 07/08/1992 34.0695-116.38891228U.S. National Park Service (NPS) 
ClickSAGO5CASan Gorgonio San Bernardino County  34.1941-116.91281720  
ClickSAGO1CASan Gorgonio WildernessConverse Fire Station, Seven Oaks, CA, S. of Big Bear LakeSan Bernardino County03/02/1988  34.1939-116.91321726U.S. Forest Service (USFS)USFS
ClickJOSH1CAJoshua Tree NP San Bernardino County02/22/2000  34.0695-116.38891235 NPS
ClickAGTI1CAAgua Tibia San Diego County11/15/2000  33.4636-116.9706508City of Agua TibiaUSFS
ClickLAVO1CALassen Volcanic NPRanger station near NW entrance, Manzanita Lake, 25 yds SE of Fire StationShasta County03/02/1988  40.5398-121.57681733U.S. National Park Service (NPS)NPS
ClickLABE1CALava Beds NM Siskiyou County03/25/2000  41.7117-121.50681460U.S. National Park Service (NPS)NPS
ClickTRIN1CATrinity Trinity County07/19/2000  40.7864-122.80461014U.S. Forest Service (USFS)USFS
ClickSEQU1CASequoia NPResidence area, park HQ, Ash Mountain water tankTulare County03/04/1992  36.4894-118.8291519U.S. National Park Service (NPS)NPS
ClickWHRI1COWhite River NFUSFS Communication Facility, at Tourtellotte Park, Aspen Mt. Ski Area, Aspen, COGarfield County07/17/1993  39.1536-106.82093414U.S. Forest Service (USFS)USFS
ClickWEMI1COWeminuche WildernessUSFS fire station 30 miles N of Durango 1 mile N of Purgatory Ski AreaLa Plata County03/02/1988  37.6594-107.79992750U.S. Forest Service (USFS)USFS
ClickROMO1CORocky Mountain NP3 mi S of Lily Lake VC, Ozone monitoring shelter 15 miles from ROMO1Larimer County09/19/1990  40.2783-105.54572760U.S. National Park Service (NPS) 
ClickRMHQ1CORocky Mountain NP HQPark Headquarters at bone yardLarimer County03/02/1988 02/27/1991 40.3624-105.56382408U.S. National Park Service (NPS) 
ClickMEVE1COMesa Verde NPResource Management Research Area, Chapin MesaMontezuma County03/05/1988  37.1984-108.49072172U.S. National Park Service (NPS)NPS
ClickMOZI1COMount Zirkel WildernessBuffalo Pass, NE of Steamboat Springs, CO, DRI Storm Peak/ Mount Werner FacilityRoutt County07/30/1994  40.5383-106.67663243U.S. Forest Service (USFS)USFS
ClickSTPE1COStorm PeakDRI Storm Peak, NE of Steamboat Springs, CORoutt County12/01/1993 07/27/1994 40.445-106.743220U.S. Forest Service (USFS) 
ClickGRSA1COGreat Sand Dunes NMMonument HeadquartersSaguache County05/04/1988  37.7249-105.51852498U.S. National Park Service (NPS)NPS
ClickMOMO1CTMohawk Mt.Observation Tower, 10 mi W of Torrington, CT, Mohawk MountainLitchfield County09/28/2001  41.8214-73.2973522State of ConnecticutSTATE
ClickWASH1DCWashington D.C.Natl. Capitol Region Park Police HQ, on roofDistrict of Columbia03/01/1988  38.8762-77.034415U.S. National Park Service (NPS)NPS
ClickCHAS1FLChassahowitzka NWRMaintenance Facility, 4 mi S of Homossassa Springs, FL, 1/4 mile West of the Chassahowitzka NWR Maintenance FacilityHernando County04/03/1993  28.7484-82.55494U.S. Fish and Wildlife Service (FWS)FWS
ClickEVER1FLEverglades NPBehind Everglades Research CenterMonroe County09/28/1988  25.391-80.68061U.S. National Park Service (NPS)NPS
ClickSAMA1FLSt. Marks Wakulla County06/13/2000  30.0926-84.16148U.S. Fish and Wildlife Service (FWS)FWS
ClickOKEF1GAOkefenokee NWRHeadquarters, 3-4 mi W of GA Rt. 121Charlton County09/28/1991  30.7405-82.128348U.S. Fish and Wildlife Service (FWS)FWS
ClickCOHU1GACohutta Whitfield County05/24/2000  34.7852-84.6265735U.S. Forest Service (USFS)USFS
ClickMALO3HIMauna Loa Observatory #3NOAA Global Monitoring SiteHawaii County04/03/1996 05/18/1996 19.5389-155.5783400U.S. National Park Service (NPS) 
ClickMALO4HIMauna Loa Observatory #4NOAA Global Monitoring SiteHawaii County04/03/1996 05/18/1996 19.5389-155.5783400U.S. National Park Service (NPS) 
ClickHAVO1HIHawaii Volcanoes NPBehind Craft CenterHawaii County03/23/1988  19.4309-155.25791259U.S. National Park Service (NPS)NPS
ClickMALO1HIMauna Loa Observatory #1NOAA Global Monitoring SiteHawaii County03/01/1995  19.5362-155.57673439U.S. National Park Service (NPS) 
ClickMALO2HIMauna Loa Observatory #2NOAA Global Monitoring SiteHawaii County03/01/1995  19.5362-155.57673439U.S. National Park Service (NPS) 
ClickHALE1HIHaleakala NPOlinda Research facilityMaui County02/16/1991  20.8086-156.28231153U.S. National Park Service (NPS)NPS
ClickCRMO1IDCraters of the Moon NMBehind Visitors CenterButte County05/13/1992  43.4605-113.55511818U.S. National Park Service (NPS)NPS
ClickSCOV1IDScovilleAt the Idaho National Engineering Lab facility, Atomic City, IDButte County05/13/1992 05/24/1997 43.65-113.03331500U.S. Department of Energy 
ClickSAWT1IDSawtooth NFUSFS Stanley Station Warehouse, Stanley, IDCuster County01/26/1994  44.1705-114.92711990U.S. Forest Service (USFS)USFS
ClickSALM1IDSalmon NFMountain Top Communications Facility, 6 miles SW of Salmon, IDLemhi County12/04/1993 08/06/2000 45.1588-114.0262788U.S. Forest Service (USFS) 
ClickBOND1ILBondville Champaign County03/05/2001  40.052-88.3733263U.S. Environmental Protection Agency (EPA)EPA
ClickLIVO1INLivonia Washington County03/06/2001  38.5346-86.2604282U.S. Environmental Protection Agency (EPA)EPA
ClickCEBL1KSCedar Bluff Trego County06/01/2002  38.7701-99.7634666 STATE
ClickMACA1KYMammoth Cave NPHouchin Meadow ozone site off Alfred Cook RoadEdmonson County09/04/1991  37.1318-86.1479235U.S. National Park Service (NPS)NPS
ClickCADI1KYCadiz Trigg County03/04/2001  36.7842-87.8501192U.S. Environmental Protection Agency (EPA)EPA
ClickBRET1LABreton St. Bernard Parish06/18/2000  29.1189-89.206611U.S. Fish and Wildlife Service (FWS)FWS
ClickSIKE1LASikes Winn Parish03/22/2001  32.0574-92.43545U.S. Environmental Protection Agency (EPA)EPA
ClickPRIS1MEPresque Isle Aroostook County03/20/2001  46.6964-68.0333166Micmac TribeTRIBE
ClickCABA1MECasco Bay Cumberland County03/20/2001  43.8325-70.064427State of MaineSTATE
ClickBRMA1MEBridgtonBridgton, MECumberland County03/20/2001  44.1074-70.7292234State of MaineSTATE
ClickACAD1MEAcadia NPPark HeadquartersHancock County03/02/1988  44.3771-68.261157U.S. National Park Service (NPS)NPS
ClickOLTO1MEOld Town Penobscot County07/07/2001  44.9334-68.645751Penobscot TribeTRIBE
ClickMOOS1MEMoosehorn NWRMcConvey Rd, about 1 mi NE of NWR Baring Unit HQWashington County12/07/1994  45.1259-67.266178U.S. Fish and Wildlife Service (FWS)FWS
ClickCACO1MACape Cod Barnstable County04/01/2001  41.9758-70.024249State of MassachusettsSTATE
ClickMAVI1MAMartha's Vineyard Dukes County01/30/2003  41.3309-70.78463Wampanoags TribeTRIBE
ClickQURE1MAQuabbin SummitWindsor Dam on Loop Road, 5 mi W of Ware, MA, Quabbin SummitHampshire County03/20/2001  42.2985-72.3346318State of MassachusettsSTATE
ClickISLE1MIIsle Royale NPNear the boat ramp on point opposite town of Eagle HarborKeweenaw County11/16/1999  47.4596-88.1491182U.S. National Park Service (NPS)NPS
ClickISRO1MIIsle Royale NPWindigo Ranger StationKeweenaw County06/01/1988 07/27/1991 47.9167-89.15213U.S. National Park Service (NPS) 
ClickSENE1MISeney Schoolcraft County11/16/1999  46.2889-85.9503215U.S. Fish and Wildlife Service (FWS)FWS
ClickBOWA1MNBoundary Waters Canoe AreaNADP Site, 20 mi ENE of Ely, MNCook County08/14/1991  47.9466-91.4955527U.S. Forest Service (USFS)USFS
ClickVOYA1MNVoyageurs NP #11 mile NW of Visitor Center, End of road 129,St. Louis County03/02/1988 09/28/1996 48.4132-92.8303426U.S. National Park Service (NPS)NPS
ClickVOYA2MNVoyageurs NP #2 St. Louis County11/16/1999  48.4126-92.8286429U.S. National Park Service (NPS) 
ClickELDO1MOEl Dorado Springs Cedar County06/01/2002  37.7009-94.0348298 STATE
ClickMING1MOMingo Stoddard County05/24/2000  36.9717-90.1432111U.S. Fish and Wildlife Service (FWS)FWS
ClickHEGL1MOHercules-Glades12 mi E of Forsythe, MOTaney County03/02/2001  36.6138-92.9221404U.S. Forest Service (USFS)USFS
ClickGLAC1MTGlacier NP2 miles NW of park HQ at Apgar stablesFlathead County03/02/1988  48.5105-113.9966975U.S. National Park Service (NPS)NPS
ClickFLAT1MTFlathead Flathead County06/19/2002  47.7734-114.2691580 TRIBE
ClickGAMO1MTGates of the Mountains Lewis and Clark County07/25/2000  46.8262-111.71072387U.S. Forest Service (USFS)USFS
ClickCABI1MTCabinet Mountains Lincoln County07/24/2000  47.9549-115.67091441U.S. Forest Service (USFS)USFS
ClickULBE1MTUL Bend Phillips County01/25/2000  47.5823-108.7196891U.S. Fish and Wildlife Service (FWS)FWS
ClickMONT1MTMonture Powell County03/28/2000  47.1222-113.15441282U.S. Forest Service (USFS)USFS
ClickSULA1MTSula PeakSula Peak Fire Lookout, Sula, MTRavalli County08/10/1994  45.8598-114.00011896U.S. Forest Service (USFS)USFS
ClickFOPE1MTFort Peck Roosevelt County06/25/2002  48.308-105.1022638 TRIBE
ClickNOCH1MTNorthern Cheyenne Rosebud County06/01/2002  45.6495-106.55741283 TRIBE
ClickMELA1MTMedicine Lake Sheridan County12/15/1999  48.4871-104.4757606U.S. Fish and Wildlife Service (FWS)FWS
ClickJARB1NVJarbidge WildernessMahoney Forest Service Station, Jarbidge, NVElko County03/02/1988  41.8926-115.42611869U.S. Forest Service (USFS)USFS
ClickGRBA1NVGreat Basin NPResidence area 1 mi E of VC, 200 yds south of maintenance areaWhite Pine County05/27/1992  39.0052-114.21612066U.S. National Park Service (NPS)NPS
ClickGRGU1NHGreat Gulf WildernessCamp Dodge, White Mt NF, S of Gorham, NHCoos County06/10/1995  44.3082-71.2177454U.S. Forest Service (USFS)USFS
ClickPACK1NHPack Monadnock Summit Hillsborough County10/22/2007  42.8619-71.8786695  
ClickBRIG1NJBrigantine NWREdwin D. Forsythe NWR Headquarters, Oceanville, NJAtlantic County09/18/1991  39.465-74.44925U.S. Fish and Wildlife Service (FWS)FWS
ClickGICL1NMGila WildernessAbove Visitor CenterCatron County04/06/1994  33.2204-108.23511776U.S. Forest Service (USFS)USFS
ClickSAAN1NMSan Andres Dona Ana County10/15/1997 08/30/2000 32.6869-106.48441326U.S. Fish and Wildlife Service (FWS) 
ClickSACR1NMSalt Creek Grant County04/06/2000  33.4598-104.40421072U.S. Fish and Wildlife Service (FWS)FWS
ClickWHIT1NMWhite Mountain Lincoln County01/15/2002  33.4687-105.53492064U.S. Forest Service (USFS)USFS
ClickBAND1NMBandelier NMFire Tower near VCLos Alamos County03/02/1988  35.7797-106.26641988U.S. National Park Service (NPS)NPS
ClickSAPE1NMSan Pedro Parks Rio Arriba County08/15/2000  36.0139-106.84472935U.S. Forest Service (USFS)USFS
ClickBOAP1NMBosque del Apache Socorro County04/05/2000  33.8695-106.8521390U.S. Fish and Wildlife Service (FWS)FWS
ClickWHPE1NMWheeler Peak Taos County08/15/2000  36.5854-105.4523366U.S. Forest Service (USFS)USFS
ClickADPI1NYAddison Pinnacle Steuben County04/07/2001  42.0912-77.2099512State of New YorkSTATE
ClickCOHI1NYConnecticut Hill Tompkins County04/11/2001  42.4009-76.6534519U.S. Environmental Protection Agency (EPA)EPA
ClickLIGO1NCLinville Gorge Burke County03/29/2000  35.9723-81.9331969U.S. Forest Service (USFS)USFS
ClickSHRO1NCShining Rock WildernessFrying Pan Mountain, Skyline Drive, NCHaywood County07/20/1994  35.3937-82.77441617U.S. Forest Service (USFS)USFS
ClickSWAN1NCSwanquarter Hyde County06/08/2000  35.451-76.2075-4U.S. Fish and Wildlife Service (FWS)FWS
ClickTHRO1NDTheodore Roosevelt Billings County12/15/1999  46.8948-103.3777853U.S. National Park Service (NPS)NPS
ClickLOST1NDLostwoodRefuge HeadquartersBurke County12/15/1999  48.6419-102.4022696U.S. Fish and Wildlife Service (FWS)FWS
ClickQUCI1OHQuaker City Guernsey County05/02/2001  39.9428-81.3378366U.S. Environmental Protection Agency (EPA)EPA
ClickWIMO1OKWichita Mountains Comanche County03/01/2001  34.7323-98.713509U.S. Fish and Wildlife Service (FWS)FWS
ClickELLI1OKEllis Ellis County06/01/2002  36.0853-99.9354697 STATE
ClickCHER1OKCherokee Nation Kay County09/20/2002  36.9562-97.0313342 TRIBE
ClickMOHO1ORMount Hood Clackamas County03/07/2000  45.2888-121.78371531U.S. Forest Service (USFS)USFS
ClickKALM1ORKalmiopsis Josephine County03/07/2000  42.552-124.058980U.S. Forest Service (USFS)USFS
ClickCRLA1ORCrater Lake NPPark Headquarters, maintenance areaKlamath County03/02/1988  42.8958-122.13611996U.S. National Park Service (NPS)NPS
ClickTHSI1ORThree Sisters WildernessCarmen Smith Project EWEB facility radio transmitter bldg, 3/4 mile N. of Trail Bridge Campground, OR, Rt.126Lane County07/24/1993  44.291-122.0434885U.S. Forest Service (USFS)USFS
ClickSTAR1ORStarkey Union County03/07/2000  45.2249-118.51291259U.S. Forest Service (USFS)USFS
ClickHECA1ORHells Canyonhilltop W of Oxbow DamWallowa County08/01/2000  44.9702-116.8438655U.S. Forest Service (USFS)USFS
ClickAREN1PAArendtsville Adams County04/13/2001  39.9232-77.3079267U.S. Environmental Protection Agency (EPA)EPA
ClickROMA1SCCape Romain NWRMoores Landing, Cape Romain NWR, SC , Refuge maintenance areaCharleston County09/03/1994  32.941-79.65725U.S. Fish and Wildlife Service (FWS)FWS
ClickWICA1SDWind Cave Custer County12/15/1999  43.5576-103.48381296U.S. National Park Service (NPS)NPS
ClickBADL1SDBadlands NPPark HeadquartersPennington County03/02/1988  43.7435-101.9412736U.S. National Park Service (NPS)NPS
ClickGRSM1TNGreat Smoky Mountains NPLook Rock, 8 mi S of Maryville, TNSevier County03/02/1988  35.6334-83.9416811U.S. National Park Service (NPS)NPS
ClickBIBE1TXBig Bend NP3 miles SE of Panther Junction, at water wellBrewster County03/02/1988  29.3027-103.1781067U.S. National Park Service (NPS)NPS
ClickGUMO1TXGuadalupe Mountains NP10 miles SW of Frijole at FAA siteCulberson County03/02/1988  31.833-104.80941672U.S. National Park Service (NPS)NPS
ClickBRCA1UTBryce Canyon NP2.5 miles S of VC at water tanks, near Sunset PointGarfield County03/02/1988  37.6184-112.17362481U.S. National Park Service (NPS)NPS
ClickARCH1UTArches NPDevils Garden CampgroundGrand County03/02/1988 05/16/1992 38.7833-109.58331722U.S. National Park Service (NPS) 
ClickCANY1UTCanyonlands NPIsland in the Sky VCSan Juan County03/02/1988  38.4587-109.8211798U.S. National Park Service (NPS)NPS
ClickLOPE1UTLone Peak WildernessTimpanogos Cave, NMUtah County12/01/1993 08/30/2001 40.4449-111.70811768U.S. Forest Service (USFS) 
ClickZION1UTZion Washington County03/21/2000 08/15/2004 37.4591-113.22431545U.S. National Park Service (NPS)NPS
ClickCAPI1UTCapitol Reef NP Wayne County03/28/2000  38.3022-111.29261897U.S. National Park Service (NPS)NPS
ClickLYBR1VTLye Brook WildernessMount Equinox, at the windmills, Manchester, VTBennington County09/21/1991  43.1482-73.12681015U.S. Forest Service (USFS)USFS
ClickPMRF1VTProctor Maple R. F.5 Miles N. of Underhill, VT, 2 mi NE of Underhill Center, VTChittenden County12/22/1993  44.5284-72.8688401State of VermontSTATE
ClickJARI1VAJames River Face Wilderness Bedford County06/03/2000  37.6266-79.5125290U.S. Forest Service (USFS)USFS
ClickJEFF1VAJefferson NFArnold Valley - Puritan Tract, Natural Bridge, VAGiles County09/03/1994 05/20/2000 37.6167-79.4833219U.S. Forest Service (USFS) 
ClickSHEN1VAShenandoah NPBig Meadows 1/2 mile N of Visitor CenterPage County03/02/1988  38.5229-78.43481079U.S. National Park Service (NPS)NPS
ClickOLYM1WAOlympic Clallam County07/11/2001  48.0065-122.9727600U.S. National Park Service (NPS)NPS
ClickPUSO1WAPuget SoundNext to reservoir East of I-5 on Union Hill, downtown Seattle, WAKing County03/23/1996  47.5696-122.311998U.S. Forest Service (USFS)EPA
ClickSNPA1WASnoqualmie PassDOT Radio Facility, Snoqualmie Ski Area, WA , 150 yards from Big Bull LiftKittitas County07/03/1993  47.422-121.42591049U.S. Forest Service (USFS)USFS
ClickCORI1WAColumbia River GorgeRt. turn off west, SR-14 0.7 miles west of Wishram, WA., 1.5 miles NW of Wilsham, WAKlickitat County06/26/1993  45.6644-121.0008179U.S. Forest Service (USFS)USFS
ClickCOGO1WAColumbia Gorge #1 Klickitat County09/16/1996  45.5693-122.2103230WASHINGTON STATE DEPARTMENT OF ECOLOGYUSFS
ClickWHPA1WAWhite Pass Lewis County02/15/2000  46.6243-121.38811827U.S. Forest Service (USFS)USFS
ClickPASA1WAPasaytenLoup-loup ski area, Hwy 20 E of Twisp, WAOkanogan County11/15/2000  48.3877-119.92751627U.S. Forest Service (USFS)USFS
ClickMORA1WAMount Rainier NPPark HQ, Tahoma Woods, Ashford, WAPierce County03/02/1988  46.7583-122.1244439U.S. National Park Service (NPS)NPS
ClickSPOK1WASpokane Res. Spokane County07/11/2001 06/28/2005 47.9045-117.8609552Spokane TribeTRIBE
ClickLYND1WALyndenFCC Monitoring Station W of LyndonWhatcom County10/16/1996 08/30/1997 48.9533-122.558628NORTHWEST AIR POLLUTION AUTHORITY 
ClickNOCA1WANorth CascadesRoss DamWhatcom County03/01/2000  48.7316-121.0646569U.S. National Park Service (NPS)NPS
ClickDOSO1WVDolly Sods WildernessBearden Knob, 3 mi SE of Davis, WVTucker County09/25/1991  39.1053-79.42611182U.S. Forest Service (USFS)USFS
ClickBRLA1WYBrooklyn LakeSnowy Range, 15 miles NW of Centennial, WY, at Brooklyn LakeAlbany County09/01/1993 12/29/2003 41.3662-106.24183196U.S. Forest Service (USFS) 
ClickTHBA1WYThunder Basin Campbell County06/01/2002  44.6634-105.28741195 STATE
ClickCLPE1WYCloud Peak Johnson County06/22/2002  44.3335-106.95652471 STATE
ClickYELL1WYYellowstone NP 1SW of Fishing Bridge, Yellowstone Lake above maintenance yard and seasonal employee housing/campground. , Lake Ranger OfficePark County03/09/1988 07/01/1996 44.5654-110.40032442U.S. National Park Service (NPS)NPS
ClickNOAB1WYNorth AbsarokaDead Indian Summit, NW of Cody, WYPark County01/25/2000  44.7448-109.38162483U.S. Forest Service (USFS)USFS
ClickYELL2WYYellowstone NP 2 Park County07/01/1996  44.5653-110.40022425U.S. National Park Service (NPS) 
ClickBRID1WYBridger WildernessWhite Pine ski area 10 miles E of Pinedale, WY, near Fremont LakeSublette County03/02/1988  42.9749-109.75792627U.S. Forest Service (USFS)USFS
ClickEGBE1ONEgbert  05/01/2005  44.2311-79.7832251 SPECIAL
ClickSHMI1COShamrock Mine  08/01/2004  37.3038-107.48422351  
ClickHACR1HIHaleakala Crater  01/23/2007  20.7585-156.24792158  
ClickCHIC1ILChicago  11/11/2003 09/05/2005 41.7514-87.7135195 STN
ClickNEYO1NYNew York City    40.8161-73.901945 STN
ClickFRES1CAFresno  09/03/2004  36.7818-119.7732100  
ClickRUBI1CARubidoux  09/03/2004 09/05/2005 33.9996-117.4161248 STN
ClickDETR1MIDetroit  11/08/2003  42.2286-83.2085180 STN
ClickBIRM1ALBirmingham  04/30/2004  33.5531-86.8148176 STM
ClickGRRI1MNGreat River Bluffs  07/25/2002  43.9373-91.4052370 STATE
ClickBLMO1MNBlue Mounds  07/25/2002  43.7158-96.1913473 STATE
ClickLASU2IALake Sugema  12/02/2004  40.6932-92.0059229  
ClickLASU1IALake Sugema  06/01/2002 11/30/2004 40.6883-91.9883210 STATE
ClickVILA1IAViking Lake  06/01/2002  40.969-95.045371 STATE
ClickSAFO1KSSac and Fox  06/19/2002  39.9791-95.5682293 TRIBE
ClickTALL1KSTallgrass  09/02/2002  38.4341-96.5602390 STATE
ClickNEBR1NENebraska NF  07/31/2002  41.8888-100.3387883 STATE
ClickCRES1NECrescent Lake  07/31/2002  41.7627-102.43361207 STATE
ClickOMAH1NEOmaha  08/07/2003  42.1487-96.4318430 TRIBE
ClickMAKA1WAMakah Tribe  08/24/2006  48.3719-124.595   
ClickMKGO1PAM.K. Goddard  04/17/2001  41.4269-80.1453380U.S. Environmental Protection Agency (EPA)EPA
ClickPITT1PAPittsburgh  04/18/2004  40.4654-79.9607268 STN
ClickAMBL1AKAmbler  07/02/2004 08/09/2005 67.0993-157.862878 NPS
ClickPETE1AKPetersburg  07/02/2004  56.6108-132.81230 USFS
ClickWARI1NVWalker River Paiute Tribe  06/02/2003 11/07/2005 38.9519-118.81461250 TRIBE
ClickATLA1GAAtlanta  04/30/2004  33.688-84.2903243 STN
ClickVIIS1VIVirgin Islands NPBiosphere Reserve Complex, Lind Point, St. John, VI 10/13/1990  18.3363-64.796251U.S. National Park Service (NPS)NPS
ClickZICA1UTZion Canyon  12/01/2002  37.1983-113.15081215  
ClickDOUG1AZDouglas  06/02/2004  31.3492-109.53971230 STATE
ClickRAFA1CASan Rafael  02/02/2000  34.7339-120.0074957U.S. Forest Service (USFS)USFS
ClickHOUS1TXHouston  05/06/2004 09/05/2005 29.6698-95.12857 STN
ClickBALT1MDBaltimore  06/02/2004  39.2547-76.709378 SPECIAL
ClickFRRE1MDFrostberg Reservoir (Big Piney Run)  04/18/2004  39.7058-79.0122767 STATE