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| USGS Map Name | Map Size | Scale | Latitude | Longitude | DRG Filename | View Map | ||||||
| Oakland | 7.5deg x 7.5deg | 1:24,000 | 41.375°N - 41.250°N | 95.500°W - 95.375°W | o41095c4.tif | |||||||
| Oakland Acres | 7.5deg x 7.5deg | 1:24,000 | 41.750°N - 41.625°N | 92.875°W - 92.750°W | o41092f7.tif | |||||||
| Oakville | 7.5deg x 7.5deg | 1:24,000 | 41.125°N - 41.000°N | 91.125°W - 91.000°W | o41091a1.tif | |||||||
| Ocheyedan | 7.5deg x 7.5deg | 1:24,000 | 43.500°N - 43.375°N | 95.625°W - 95.500°W | o43095d5.tif | |||||||
| Odebolt East | 7.5deg x 7.5deg | 1:24,000 | 42.375°N - 42.250°N | 95.250°W - 95.125°W | o42095c2.tif | |||||||
| Odebolt West | 7.5deg x 7.5deg | 1:24,000 | 42.375°N - 42.250°N | 95.375°W - 95.250°W | o42095c3.tif | |||||||
| Oelwein | 7.5deg x 7.5deg | 1:24,000 | 42.750°N - 42.625°N | 92.000°W - 91.875°W | o42091f8.tif | |||||||
| Oelwein | 60min x 60min | 1:100,000 | 43.000°N - 42.500°N | 92.000°W - 91.000°W | f42091e1.tif | |||||||
| Oelwein SE | 7.5deg x 7.5deg | 1:24,000 | 42.625°N - 42.500°N | 91.875°W - 91.750°W | o42091e7.tif | |||||||
| Ogden | 15min x 15min | 42.250°N - 42.000°N | 94.250°W - 94.000°W | |||||||||
| Ogden | 7.5deg x 7.5deg | 1:24,000 | 42.125°N - 42.000°N | 94.125°W - 94.000°W | o42094a1.tif | |||||||
| Okabena | 15min x 15min | 43.750°N - 43.500°N | 95.500°W - 95.250°W | |||||||||
| Okoboji | 7.5deg x 7.5deg | 1:24,000 | 43.500°N - 43.375°N | 95.250°W - 95.125°W | o43095d2.tif | |||||||
| Olaf | 7.5deg x 7.5deg | 1:24,000 | 43.000°N - 42.875°N | 93.750°W - 93.625°W | o42093h6.tif | |||||||
| Olds | 15min x 15min | 41.250°N - 41.000°N | 91.750°W - 91.500°W | |||||||||
| Ollie | 7.5deg x 7.5deg | 1:24,000 | 41.250°N - 41.125°N | 92.125°W - 92.000°W | o41092b1.tif | |||||||
| Olmitz | 7.5deg x 7.5deg | 1:24,000 | 41.125°N - 41.000°N | 93.250°W - 93.125°W | o41093a2.tif | |||||||
| Omaha | 60min x 60min | 1:100,000 | 41.500°N - 41.000°N | 96.000°W - 95.000°W | f41095a1.tif | |||||||
| Omaha | 1deg x 2deg | 1:250,000 | 42.000°N - 41.000°N | 96.000°W - 94.000°W | c41094a1.tif | |||||||
| Omaha | 7.5deg x 7.5deg | 1:24,000 | 40.625°N - 40.500°N | 92.875°W - 92.750°W | o40092e7.tif | |||||||
| Omaha E | 1deg x 1deg | 42.000°N - 41.000°N | 95.000°W - 94.000°W | |||||||||
| Omaha North | 7.5deg x 7.5deg | 1:24,000 | 41.375°N - 41.250°N | 96.000°W - 95.875°W | o41095c8.tif | |||||||
| Omaha South | 7.5deg x 7.5deg | 1:24,000 | 41.250°N - 41.125°N | 96.000°W - 95.875°W | o41095b8.tif | |||||||
| Omaha W | 1deg x 1deg | 42.000°N - 41.000°N | 96.000°W - 95.000°W | |||||||||
| Onawa | 7.5deg x 7.5deg | 1:24,000 | 42.125°N - 42.000°N | 96.125°W - 96.000°W | o42096a1.tif | |||||||
| Onawa | 15min x 15min | 42.250°N - 42.000°N | 96.250°W - 96.000°W | |||||||||
| Onawa SW | 7.5deg x 7.5deg | 1:24,000 | 42.125°N - 42.000°N | 96.250°W - 96.125°W | o42096a2.tif | |||||||
| Oquawka | 15min x 15min | 41.000°N - 40.750°N | 91.000°W - 90.750°W | |||||||||
| Oquawka | 7.5deg x 7.5deg | 1:24,000 | 41.000°N - 40.875°N | 91.000°W - 90.875°W | o40090h8.tif | |||||||
| Orange City | 7.5deg x 7.5deg | 1:24,000 | 43.125°N - 43.000°N | 96.125°W - 96.000°W | o43096a1.tif | |||||||
| Orchard | 7.5deg x 7.5deg | 1:24,000 | 43.250°N - 43.125°N | 92.875°W - 92.750°W | o43092b7.tif | |||||||
| Orient | 7.5deg x 7.5deg | 1:24,000 | 41.250°N - 41.125°N | 94.500°W - 94.375°W | o41094b4.tif | |||||||
| Osage | 15min x 15min | 43.500°N - 43.250°N | 93.000°W - 92.750°W | |||||||||
| Osage | 7.5deg x 7.5deg | 1:24,000 | 43.375°N - 43.250°N | 92.875°W - 92.750°W | o43092c7.tif | |||||||
| Osage SW | 7.5deg x 7.5deg | 1:24,000 | 43.375°N - 43.250°N | 93.000°W - 92.875°W | o43092c8.tif | |||||||
| Osceola | 15min x 15min | 41.250°N - 41.000°N | 94.000°W - 93.750°W | |||||||||
| Osceola | 7.5deg x 7.5deg | 1:24,000 | 41.125°N - 41.000°N | 93.875°W - 93.750°W | o41093a7.tif | |||||||
| Oskaloosa | 60min x 60min | 1:100,000 | 41.500°N - 41.000°N | 93.000°W - 92.000°W | f41092a1.tif | |||||||
| Oskaloosa | 7.5deg x 7.5deg | 1:24,000 | 41.375°N - 41.250°N | 92.750°W - 92.625°W | o41092c6.tif | |||||||
| Oskaloosa | 15min x 15min | 41.500°N - 41.250°N | 92.750°W - 92.500°W | |||||||||
| Ostrander | 7.5deg x 7.5deg | 1:24,000 | 43.625°N - 43.500°N | 92.500°W - 92.375°W | o43092e4.tif | |||||||
| Otley | 7.5deg x 7.5deg | 1:24,000 | 41.500°N - 41.375°N | 93.125°W - 93.000°W | o41093d1.tif | |||||||
| Oto | 7.5deg x 7.5deg | 1:24,000 | 42.375°N - 42.250°N | 96.000°W - 95.875°W | o42095c8.tif | |||||||
| Ottosen | 15min x 15min | 43.000°N - 42.750°N | 94.500°W - 94.250°W | |||||||||
| Ottumwa North | 15min x 15min | 41.250°N - 41.000°N | 92.500°W - 92.250°W | |||||||||
| Ottumwa North | 7.5deg x 7.5deg | 1:24,000 | 41.125°N - 41.000°N | 92.500°W - 92.375°W | o41092a4.tif | |||||||
| Ottumwa South | 15min x 15min | 41.000°N - 40.750°N | 92.500°W - 92.250°W | |||||||||
| Ottumwa South | 7.5deg x 7.5deg | 1:24,000 | 41.000°N - 40.875°N | 92.500°W - 92.375°W | o40092h4.tif | |||||||
| Owasa | 7.5deg x 7.5deg | 1:24,000 | 42.500°N - 42.375°N | 93.250°W - 93.125°W | o42093d2.tif | |||||||
| Oxford | 15min x 15min | 41.750°N - 41.500°N | 92.000°W - 91.750°W | |||||||||
| Oxford | 7.5deg x 7.5deg | 1:24,000 | 41.750°N - 41.625°N | 91.875°W - 91.750°W | o41091f7.tif | |||||||
| Oxford Junction | 7.5deg x 7.5deg | 1:24,000 | 42.000°N - 41.875°N | 91.000°W - 90.875°W | o41090h8.tif | |||||||
| Oyens | 7.5deg x 7.5deg | 1:24,000 | 42.875°N - 42.750°N | 96.125°W - 96.000°W | o42096g1.tif |