File updated 2004-09-09 IMPROVE Network Aerosol Site List: Site State Elevation (m) Latitude Longitude Start Date End Date Site Name ACAD1 ME 150.0 44.3771 -68.2612 1988-03-02 Acadia National Park ADPI1 NY 528.0 42.0911 -77.2098 2001-04-07 Addison Pinnacle AGTI1 CA 507.0 33.4637 -116.9706 2000-11-15 Agua Tibia ARCH1 UT 1722.0 38.7833 -109.5833 1988-03-02 1992-05-01 Arches National Park AREN1 PA 268.0 39.9231 -77.3078 2001-04-13 Arendtsville BADL1 SD 736.0 43.7435 -101.9412 1988-03-02 Badlands National Park BADL5 SD 736.0 43.7435 -101.9412 Badlands National Park BALD1 AZ 2513.0 34.0584 -109.4405 2000-02-29 Mount Baldy BAND1 NM 1987.0 35.7797 -106.2664 1988-03-02 Bandelier National Monument BIBE1 TX 1075.0 29.3028 -103.1780 1988-03-02 Big Bend National Park BIBEX TX 1075.0 29.3028 -103.1780 Big Bend National Park BLIS1 CA 2116.0 38.9756 -120.1018 1990-11-17 Bliss State Park (TRPA) BLMO1 MN 474.0 43.7158 -96.1913 Blue Mounds BOAP1 NM 1383.0 33.8695 -106.8520 2000-04-05 Bosque del Apache BOND1 IL 211.0 40.0514 -88.3719 2001-03-05 Bondville BOND9 IL 211.0 40.0514 -88.3719 2003-03-01 Bondville BOWA1 MN 523.8 47.9464 -91.4961 1991-08-14 Boundary Waters Canoe Area BRCA1 UT 2477.0 37.6184 -112.1736 1988-03-02 Bryce Canyon National Park BRET1 LA 2.0 29.1186 -89.2065 2000-06-18 Breton BRID1 WY 2607.0 42.9749 -109.7570 1988-03-02 Bridger Wilderness BRID9 WY 2607.0 42.9749 -109.7570 1988-03-02 Bridger Wilderness BRIG1 NJ 5.0 39.4650 -74.4492 1991-09-18 Brigantine National Wildlife Refuge BRIG9 NJ 5.0 39.4650 -74.4492 1991-09-18 Brigantine National Wildlife Refuge BRLA1 WY 3196.0 41.3662 -106.2418 1993-07-31 Brooklyn Lake BRMA1 ME 242.0 44.1074 -70.7293 2001-03-20 Bridgton CABA1 ME 15.0 43.8325 -70.0643 2001-03-20 Casco Bay CABI1 MT 1434.0 47.9550 -115.6709 2000-07-24 Cabinet Mountains CACO1 MA 41.0 41.9758 -70.0247 2001-04-01 Cape Cod CACR1 AR 690.0 34.4543 -94.1429 2000-06-22 Caney Creek CADI1 KY 188.0 36.7854 -87.8504 2001-03-04 Cadiz CANY1 UT 1799.0 38.4587 -109.8209 1988-03-02 Canyonlands National Park CAPI1 UT 1890.0 38.3022 -111.2926 2000-03-28 Capitol Reef (CAPI1) CEBL1 KS 671.0 38.7000 -99.9000 Cedar Bluff CHAS1 FL 2.0 28.7485 -82.5549 1993-04-03 Chassahowitzka National Wildlife CHER1 OK 335.0 36.9333 -97.0167 Cherokee Nation CHIR1 AZ 1570.0 32.0089 -109.3891 1988-03-02 Chiricahua National Monument CLPE1 WY 2469.0 44.3335 -106.9565 Cloud Peak COGO1 WA 225.0 45.5695 -122.2115 1996-09-16 1998-05-30 Columbia Gorge COHI1 NY 505.0 42.4009 -76.6535 2001-04-11 Connecticut Hill COHU1 GA 743.0 34.7852 -84.6263 2000-05-24 Cohutta CORI1 WA 201.1 45.6678 -121.0233 1993-06-26 Columbia River Gorge CRES1 NE 1204.0 41.7627 -102.4336 Crescent Lake CRLA1 OR 1963.0 42.8962 -122.1359 1988-03-02 Crater Lake National Park CRMO1 ID 1817.0 43.4606 -113.5551 1992-05-13 Craters of the Moon NM(US DOE) DENA1 AK 658.2 63.7233 -148.9675 1988-03-02 Denali National Park DEVA1 CA 124.9 36.5088 -116.8469 1993-10-20 Death Valley Monument DOLA1 CA 914.0 35.6987 -118.2021 1994-08-10 1998-10-03 Dome Lands Wilderness DOME1 CA 925.0 35.7279 -118.1377 2000-02-01 Dome Lands Wilderness DOSO1 WV 1158.0 39.1070 -79.4263 1991-09-25 Dolly Sods /Otter Creek Wilderness ELDO1 MO 293.0 37.6900 -94.0350 El Dorado Springs ELLI1 OK 701.0 36.0852 -99.9349 Ellis EVER1 FL 3.0 25.3910 -80.6807 1988-09-28 1999-08-21 Everglades National Park EVERX FL 3.0 25.3910 -80.6807 Everglades National Park FLAT1 MT 1576.0 47.7734 -114.2691 Flathead FOPE1 MT 885.0 48.3080 -105.1021 Fort Peck GAMO1 MT 2392.0 46.8263 -111.7108 2000-07-25 Gates of the Mountains GAMOX MT 2392.0 46.8263 -111.7108 Gates of the Mountains GICL1 NM 1776.0 33.2204 -108.2351 1994-04-06 Gila Wilderness GLAC1 MT 979.0 48.5105 -113.9967 1988-03-02 Glacier National Park GRBA1 NV 2068.0 39.0052 -114.2161 1992-05-27 Great Basin National Park GRCA1HS AZ 2164.0 36.0658 -112.1539 1996-06-01 1996-06-15 Hopi Point #2 (High Sensitivity) GRCA1 AZ 2164.0 36.0667 -112.1500 1988-03-02 1998-08-29 Hopi Point #1 GRCA2 AZ 2267.0 35.9731 -111.9841 1997-09-24 Hance Camp at Grand Canyon NP GRGU1 NH 445.0 44.3082 -71.2177 1995-06-10 Great Gulf Wilderness GRRI1 WI 380.0 43.9374 -91.4052 Great River Bluffs GRSA1 CO 2504.0 37.7249 -105.5186 1988-05-04 Great Sand Dunes National Monument GRSM1 TN 815.0 35.6334 -83.9417 1988-03-02 Great Smoky Mountains National Park GRSM9 TN 815.0 35.6334 -83.9417 2003-03-01 Great Smoky Mountains National Park GUMO1 TX 1674.0 31.8330 -104.8094 1988-03-02 Guadalupe Mountains National Park HALE1 HI 1157.9 20.8086 -156.2823 1991-02-16 Haleakala National Park HANC9 AZ HAVO1 HI 1204.0 19.4309 -155.2580 1988-03-23 Hawaii Volcanoes National Park HECA1 OR 625.0 44.9932 -116.8395 2000-08-01 Hells Canyon HEGL1 MO 425.0 36.6713 -92.8781 2001-03-02 Hercules-Glades HILL1 AZ 1510.0 34.4289 -112.9628 2001-04-16 Hillside HOOV1 CA 2566.0 38.0887 -119.1759 2001-07-01 Hoover HOOVX CA 2566.0 38.0887 -119.1759 Hoover IKBA1 AZ 1303.0 34.3403 -111.6824 2000-04-02 Ike's Backbone INGA1HS AZ 1166.0 36.0776 -112.1289 1989-10-04 1992-05-26 Indian Gardens 2 (High Sensitivity) INGA1 AZ 1166.0 36.0776 -112.1290 1989-10-04 Indian Gardens ISLE1 MI 185.8 47.4607 -88.1458 1999-11-16 Isle Royale National Park (New) ISRO1 MI 213.0 47.9167 -89.1500 1988-06-01 1991-07-27 Isle Royale National Park JARB1 NV 1882.0 41.8926 -115.4261 1988-03-02 Jarbidge Wilderness JARI1 VA 299.0 37.6266 -79.5125 2000-12-05 James River Face JEFF1 VA 219.0 37.6167 -79.4833 1994-09-03 Jefferson/James River Face Wilderness JOSH1 CA 1228.0 34.0695 -116.3889 2000-02-22 Joshua Tree JOSHX CA 1228.0 34.0695 -116.3889 Joshua Tree JOTR1 CA 1228.0 34.0695 -116.3889 1991-09-04 1992-07-08 Joshua Tree National Monument KAIS1 CA 2573.0 37.2181 -119.1558 2000-01-26 Kaiser KALM1 OR 90.0 42.5519 -124.0588 2000-03-07 Kalmiopsis LABE1 CA 1469.0 41.7117 -121.5068 2000-03-25 Lava Beds LASU1 IA 210.0 40.6883 -91.9883 Lake Sugema LAVO1 CA 1755.2 40.5403 -121.5778 1988-03-02 Lassen Volcanic National Park LAVOX CA 1755.2 40.5403 -121.5778 Lassen Volcanic National Park LIGO1 NC 986.0 35.9722 -81.9331 2000-03-29 Linville Gorge LIVO1 IN 298.0 38.5347 -86.2608 2001-03-06 Livonia LOPE1 UT 1768.0 40.4449 -111.7081 1993-12-01 Lone Peak Wilderness LOST1 ND 692.0 48.6420 -102.4022 1999-12-15 Lostwood LYBR1 VT 1006.0 43.1481 -73.1267 1991-09-21 Lye Brook Wilderness LYND1 WA 28.0 48.9533 -122.5586 1996-10-16 1997-08-30 Lynden MACA1 KY 248.0 37.1315 -86.1477 1991-09-04 Mammoth Cave National Park MACAX KY 248.0 37.1315 -86.1477 Mammoth Cave National Park MALO1 HI 3400.0 19.5389 -155.5780 1992-12-02 Mauna Loa National Observatory (MALO1) MALO2 HI 3400.0 19.5389 -155.5780 1992-12-02 Mauna Loa National Observatory (MALO2) MALO3 HI 3400.0 19.5389 -155.5780 1996-04-03 1996-05-18 Mauna Loa National Observatory (MALO3) MALO4 HI 3400.0 19.5389 -155.5780 1996-04-03 1996-05-18 Mauna Loa National Observatory (MALO4) MAVI1 MA 2.0 41.3333 -70.8161 Martha's Vineyard MEAD1 AZ 910.0 36.0194 -114.0684 1991-09-04 1992-09-03 Meadview MELA1 MT 605.0 48.4872 -104.4757 1999-12-15 Medicine Lake MELAX MT 605.0 48.4872 -104.4757 Medicine Lake MEVE1 CO 2177.0 37.1984 -108.4907 1988-03-05 Mesa Verde National Park MEVEX CO 2177.0 37.1984 -108.4907 Mesa Verde National Park MING1 MO 112.0 36.9717 -90.1432 2000-05-24 Mingo MKGO1 PA 387.0 41.4269 -80.1445 2001-04-17 M.K. Goddard MOHO1 OR 1340.8 45.2927 -121.7694 2000-03-07 Mount Hood MOMO1 CT 532.0 41.8214 -73.2973 2001-09-28 Mohawk Mt. MONT1 MT 1293.0 47.1222 -113.1544 2000-03-28 Monture MOOS1 ME 94.0 45.1259 -67.2661 1994-12-07 Moosehorn NWR MORA1 WA 427.0 46.7579 -122.1225 1988-03-02 Mount Rainier National Park MORA9 WA 427.0 46.7579 -122.1225 Mount Rainier National Park MOZI1 CO 3243.0 40.5383 -106.6765 1994-07-30 Mount Zirkel Wilderness NEBR1 NE 875.0 41.8887 -100.3386 Nebraska National Forest NIOB1 NE 42.9000 -100.4000 Niobrara NOAB1 WY 2480.0 44.7448 -109.3817 2000-01-25 North Absaroka NOCA1 WA 576.0 48.7316 -121.0646 2000-03-01 North Cascades NOCH1 MT 1332.0 45.6493 -106.5573 Northern Cheyenne OKEF1 GA 49.0 30.7404 -82.1284 1991-09-28 Okefenokee National Wildlife Refuge OLTO1 ME 65.0 44.9335 -68.6457 2001-07-07 Old Town OLYM1 WA 600.0 48.0065 -122.9726 2001-07-11 Olympic OLYMX WA 600.0 48.0065 -122.9726 Olympic ORPI1 AZ 505.0 31.9506 -112.8016 Organ Pipe PASA1 WA 1634.0 48.3877 -119.9275 2000-11-15 Pasayten PEFO1 AZ 1767.4 35.0781 -109.7683 1988-03-02 Petrified Forest National Park PHOE1 AZ 338.0 33.5038 -112.0958 2001-04-25 Phoenix PINN1 CA 316.9 36.4850 -121.1556 1988-03-02 Pinnacles National Monument PMRF1 VT 403.0 44.5286 -72.8687 1993-12-22 1995-05-31 Proctor Maple R. F. PMRFX VT 403.0 44.5286 -72.8687 Proctor Maple R. F. PORE1 CA 85.0 38.1199 -122.9122 1988-03-02 Point Reyes National Seashore PRIS1 ME 163.0 46.6963 -68.0335 2001-03-20 Presque Isle PUSO1 WA 80.0 47.5696 -122.3119 1996-03-23 Puget Sound QUCI1 OH 376.0 39.9429 -81.3378 2001-05-02 Quaker City QURE1 MA 315.0 42.2988 -72.3350 2001-03-20 Quabbin Summit QUREX MA 315.0 42.2988 -72.3350 Quabbin Summit QUVA1 AZ 658.0 33.2939 -111.2857 2001-04-30 Queen Valley RAFA1 CA 953.0 34.7339 -120.0074 2000-02-02 San Rafael REDW1 CA 245.0 41.5600 -124.0858 1988-03-02 Redwood National Park RMHQ1 CO 2408.0 40.3624 -105.5638 1988-03-02 1990-09-15 Rocky Mountain National Park (Headquarters) ROMA1 SC 3.0 32.9415 -79.6572 1994-09-03 Cape Romain National Wildlife Refuge ROMO1 CO 2755.0 40.2783 -105.5457 1990-09-19 Rocky Mountain National Park SAAN1 NM 1326.0 32.6869 -106.4844 1997-10-15 2000-08-30 San Andres SACR1 NM 1077.0 33.4597 -104.4043 2000-04-06 Salt Creek SAFO1 NE 293.0 39.9789 -95.5677 Sac and Fox SAFOX NE 293.0 39.9789 -95.5677 Sac and Fox SAGA1 CA 1791.0 34.2969 -118.0282 2000-12-15 San Gabriel SAGO1 CA 1705.0 34.1924 -116.9013 1988-03-02 San Gorgonio Wilderness SAGO5 CA 1705.0 34.1924 -116.9013 2003-04-01 2003-04-30 San Gorgonio Wilderness SAGO9 CA SAGU1 AZ 933.0 32.1742 -110.7372 1988-06-04 Saguaro National Monument SALM1 ID 2788.0 45.1588 -114.0260 1993-12-04 Salmon National Forest SAMA1 FL 2.0 30.0926 -84.1614 2000-06-13 St. Marks SAPE1 NM 2918.9 36.0140 -106.8446 2000-08-15 San Pedro Parks SAWE1 AZ 718.0 32.2486 -111.2178 2001-04-19 Saguaro West SAWT1 ID 1980.0 44.1706 -114.9283 1994-01-26 Sawtooth National Forest SCOV1 ID 1500.0 43.6500 -113.0333 1992-05-13 1997-05-24 Scoville SENE1 MI 216.3 46.2881 -85.9461 1999-11-16 Seney SENEX MI 216.3 46.2881 -85.9461 Seney SEQU1 CA 535.0 36.4894 -118.8292 1992-03-04 Sequoia National Park SEQU9 CA 535.0 36.4894 -118.8292 Sequoia National Park SHEN1 VA 1098.0 38.5229 -78.4347 1988-03-02 Shenandoah National Park SHRO1 NC 1621.0 35.3937 -82.7743 1994-07-20 Shining Rock Wilderness SIAN1 AZ 1595.0 34.0909 -110.9420 2000-02-10 Sierra Ancha SIKE1 LA 45.0 32.0580 -92.4334 2001-03-22 Sikes SIME1 AK 57.0 55.3255 -160.5063 2001-09-10 Simeonof SIPS1 AL 279.0 34.3433 -87.3388 1992-03-07 Sipsey Wilderness SNPA1 WA 1160.0 47.4204 -121.4277 1993-07-03 Snoqualamie Pass, Snoqualamie N.F SOLA1 CA 1900.0 38.9333 -119.9667 1989-03-25 1998-05-30 South Lake Tahoe SPOK1 WA 548.0 47.9045 -117.8609 2001-07-11 Spokane Res. STAR1 OR 1258.0 45.2249 -118.5130 2000-03-07 Starkey STPE1 CO 3220.0 40.4450 -106.7400 1993-12-01 1994-07-27 Mount Zirkel Wilderness (Storm Peak) SULA1 MT 1903.0 45.8599 -114.0001 1994-08-10 Sula (Selway Bitteroot Wilderness) SWAN1 NC 2.0 35.4510 -76.2074 2000-06-08 Swanquarter SYCA1 AZ 2039.6 35.1406 -111.9694 1991-09-11 1992-07-08 Sycamore Canyon TALL1 KS 387.0 38.3000 -96.6000 Tallgrass THBA1 WY 1193.0 44.6634 -105.2874 Thunder Basin THRO1 ND 853.0 46.8948 -103.3777 1999-12-15 Theodore Roosevelt THSI1 OR 885.0 44.2910 -122.0433 1993-07-24 Three Sisters Wilderness TONT1 AZ 786.0 33.6494 -111.1088 1988-04-23 Tonto National Monument TRCR1 AK 155.0 62.3153 -150.3156 2001-09-10 Trapper Creek TRIN1 CA 1007.0 40.7865 -122.8047 2000-07-19 Trinity TUXE1 AK 15.0 59.9925 -152.6656 2001-12-18 Tuxedni ULBE1 MT 893.0 47.5823 -108.7197 2000-01-25 UL Bend UPBU1 AR 723.0 35.8259 -93.2029 1991-12-18 Upper Buffalo Wilderness UPBU9 AR 723.0 35.8259 -93.2029 Upper Buffalo Wilderness VIIS1 VI 64.0 18.3384 -64.7950 1990-10-13 Virgin Islands National Park VILA1 IA 426.0 40.9712 -95.0439 Viking Lake VOYA1 MN 347.0 48.5833 -93.1667 1988-03-02 1996-09-28 Voyageurs National Park 1 VOYA2 MN 429.0 48.4126 -92.8286 1999-11-16 Voyageurs National Park 2 WALT1 NE 42.1000 -96.4000 Omaha Tribe WASH1 DC 16.0 38.8761 -77.0343 1988-03-01 Washington D.C. WEMI1 CO 2765.0 37.6594 -107.7998 1988-03-02 Weminuche Wilderness WHIT1 NM 2050.0 33.4698 -105.5227 2002-01-15 White Mountain WHPA1 WA 1830.0 46.6244 -121.3881 2000-02-15 White Pass WHPE1 NM 3372.0 36.5855 -105.4513 2000-08-15 Wheeler Peak WHRI1 CO 3418.0 39.1517 -106.8190 1993-07-17 White River National Forest WICA1 SD 1300.0 43.5577 -103.4838 1999-12-15 Wind Cave WIMO1 OK 518.0 34.7315 -98.7155 2001-03-01 Wichita Mountains YELL1 WY 2361.0 44.5625 -110.3730 1988-03-09 1996-07-01 Yellowstone National Park 1 YELL2 WY 2425.0 44.5653 -110.4002 1996-07-01 Yellowstone National Park 2 YOSE1 CA 1615.0 37.7125 -119.7042 1988-03-09 Yosemite National Park ZICA1 UT 1236.0 37.1952 -113.1404 Zion NP ZION1 UT 1545.0 37.4591 -113.2243 2000-03-21 Zion