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| USGS Map Name | Map Size | Scale | Latitude | Longitude | DRG Filename | View Map | ||||||
| Abingdon | 7.5deg x 7.5deg | 1:24,000 | 41.125°N - 41.000°N | 92.250°W - 92.125°W | o41092a2.tif | |||||||
| Ackley | 7.5deg x 7.5deg | 1:24,000 | 42.625°N - 42.500°N | 93.125°W - 93.000°W | o42093e1.tif | |||||||
| Ackley | 15min x 15min | 42.750°N - 42.500°N | 93.250°W - 93.000°W | |||||||||
| Ackley NE | 7.5deg x 7.5deg | 1:24,000 | 42.750°N - 42.625°N | 93.125°W - 93.000°W | o42093f1.tif | |||||||
| Adair North | 7.5deg x 7.5deg | 1:24,000 | 41.625°N - 41.500°N | 94.750°W - 94.625°W | o41094e6.tif | |||||||
| Adair South | 7.5deg x 7.5deg | 1:24,000 | 41.500°N - 41.375°N | 94.750°W - 94.625°W | o41094d6.tif | |||||||
| Adams | 7.5deg x 7.5deg | 1:24,000 | 43.625°N - 43.500°N | 92.750°W - 92.625°W | o43092e6.tif | |||||||
| Adel | 15min x 15min | 41.750°N - 41.500°N | 94.250°W - 94.000°W | |||||||||
| Adel | 7.5deg x 7.5deg | 1:24,000 | 41.625°N - 41.500°N | 94.125°W - 94.000°W | o41094e1.tif | |||||||
| Adel NW | 7.5deg x 7.5deg | 1:24,000 | 41.750°N - 41.625°N | 94.250°W - 94.125°W | o41094f2.tif | |||||||
| Adrian SW | 7.5deg x 7.5deg | 1:24,000 | 43.625°N - 43.500°N | 96.000°W - 95.875°W | o43095e8.tif | |||||||
| Afton | 15min x 15min | 41.250°N - 41.000°N | 94.250°W - 94.000°W | |||||||||
| Afton | 7.5deg x 7.5deg | 1:24,000 | 41.125°N - 41.000°N | 94.250°W - 94.125°W | o41094a2.tif | |||||||
| Agency | 7.5deg x 7.5deg | 1:24,000 | 41.000°N - 40.875°N | 92.375°W - 92.250°W | o40092h3.tif | |||||||
| Ainsworth | 7.5deg x 7.5deg | 1:24,000 | 41.375°N - 41.250°N | 91.625°W - 91.500°W | o41091c5.tif | |||||||
| Akron | 15min x 15min | 43.000°N - 42.750°N | 96.750°W - 96.500°W | |||||||||
| Akron | 7.5deg x 7.5deg | 1:24,000 | 40.625°N - 40.500°N | 93.875°W - 93.750°W | o40093e7.tif | |||||||
| Akron | 7.5deg x 7.5deg | 1:24,000 | 42.875°N - 42.750°N | 96.625°W - 96.500°W | o42096g5.tif | |||||||
| Albaton | 7.5deg x 7.5deg | 1:24,000 | 42.250°N - 42.125°N | 96.375°W - 96.250°W | o42096b3.tif | |||||||
| Albert City | 7.5deg x 7.5deg | 1:24,000 | 42.875°N - 42.750°N | 95.000°W - 94.875°W | o42094g8.tif | |||||||
| Albert Lea | 60min x 60min | 1:100,000 | 44.000°N - 43.500°N | 94.000°W - 93.000°W | f43093e1.tif | |||||||
| Albert Lea | 15min x 15min | 43.750°N - 43.500°N | 93.500°W - 93.250°W | |||||||||
| Albia | 7.5deg x 7.5deg | 1:24,000 | 41.125°N - 41.000°N | 92.875°W - 92.750°W | o41092a7.tif | |||||||
| Albia | 15min x 15min | 41.250°N - 41.000°N | 93.000°W - 92.750°W | |||||||||
| Alcester NE | 7.5deg x 7.5deg | 1:24,000 | 43.250°N - 43.125°N | 96.625°W - 96.500°W | o43096b5.tif | |||||||
| Alcester SE | 7.5deg x 7.5deg | 1:24,000 | 43.125°N - 43.000°N | 96.625°W - 96.500°W | o43096a5.tif | |||||||
| Aledo | 60min x 60min | 1:100,000 | 41.500°N - 41.000°N | 91.000°W - 90.000°W | f41090a1.tif | |||||||
| Alexander | 7.5deg x 7.5deg | 1:24,000 | 42.875°N - 42.750°N | 93.500°W - 93.375°W | o42093g4.tif | |||||||
| Algona | 15min x 15min | 43.250°N - 43.000°N | 94.250°W - 94.000°W | |||||||||
| Algona | 7.5deg x 7.5deg | 1:24,000 | 43.125°N - 43.000°N | 94.250°W - 94.125°W | o43094a2.tif | |||||||
| Allerton | 15min x 15min | 40.750°N - 40.500°N | 93.500°W - 93.250°W | |||||||||
| Allerton | 7.5deg x 7.5deg | 1:24,000 | 40.750°N - 40.625°N | 93.375°W - 93.250°W | o40093f3.tif | |||||||
| Allison | 7.5deg x 7.5deg | 1:24,000 | 42.875°N - 42.750°N | 92.875°W - 92.750°W | o42092g7.tif | |||||||
| Alloway Creek | 7.5deg x 7.5deg | 1:24,000 | 41.875°N - 41.750°N | 93.000°W - 92.875°W | o41092g8.tif | |||||||
| Alpha | 7.5deg x 7.5deg | 1:24,000 | 43.000°N - 42.875°N | 92.125°W - 92.000°W | o42092h1.tif | |||||||
| Alta | 7.5deg x 7.5deg | 1:24,000 | 42.750°N - 42.625°N | 95.375°W - 95.250°W | o42095f3.tif | |||||||
| Alton | 7.5deg x 7.5deg | 1:24,000 | 43.000°N - 42.875°N | 96.125°W - 96.000°W | o42096h1.tif | |||||||
| Altoona | 7.5deg x 7.5deg | 1:24,000 | 41.750°N - 41.625°N | 93.500°W - 93.375°W | o41093f4.tif | |||||||
| Alvord | 7.5deg x 7.5deg | 1:24,000 | 43.375°N - 43.250°N | 96.375°W - 96.250°W | o43096c3.tif | |||||||
| Amana | 7.5deg x 7.5deg | 1:24,000 | 41.875°N - 41.750°N | 91.875°W - 91.750°W | o41091g7.tif | |||||||
| Amana | 15min x 15min | 42.000°N - 41.750°N | 92.000°W - 91.750°W | |||||||||
| Ames | 15min x 15min | 42.250°N - 42.000°N | 93.750°W - 93.500°W | |||||||||
| Ames | 60min x 60min | 1:100,000 | 42.500°N - 42.000°N | 94.000°W - 93.000°W | f42093a1.tif | |||||||
| Ames East | 7.5deg x 7.5deg | 1:24,000 | 42.125°N - 42.000°N | 93.625°W - 93.500°W | o42093a5.tif | |||||||
| Ames NW | 7.5deg x 7.5deg | 1:24,000 | 42.250°N - 42.125°N | 93.750°W - 93.625°W | o42093b6.tif | |||||||
| Ames West | 7.5deg x 7.5deg | 1:24,000 | 42.125°N - 42.000°N | 93.750°W - 93.625°W | o42093a6.tif | |||||||
| Amish | 7.5deg x 7.5deg | 1:24,000 | 41.625°N - 41.500°N | 91.875°W - 91.750°W | o41091e7.tif | |||||||
| Anamosa | 15min x 15min | 42.250°N - 42.000°N | 91.500°W - 91.250°W | |||||||||
| Anamosa | 7.5deg x 7.5deg | 1:24,000 | 42.125°N - 42.000°N | 91.375°W - 91.250°W | o42091a3.tif | |||||||
| Anamosa | 60min x 60min | 1:100,000 | 42.500°N - 42.000°N | 92.000°W - 91.000°W | f42091a1.tif | |||||||
| Anamosa NE | 7.5deg x 7.5deg | 1:24,000 | 42.250°N - 42.125°N | 91.375°W - 91.250°W | o42091b3.tif | |||||||
| Andalusia | 7.5deg x 7.5deg | 1:24,000 | 41.500°N - 41.375°N | 90.750°W - 90.625°W | o41090d6.tif | |||||||
| Andover | 7.5deg x 7.5deg | 1:24,000 | 42.000°N - 41.875°N | 90.375°W - 90.250°W | o41090h3.tif | |||||||
| Andrew | 7.5deg x 7.5deg | 1:24,000 | 42.250°N - 42.125°N | 90.625°W - 90.500°W | o42090b5.tif | |||||||
| Anita | 7.5deg x 7.5deg | 1:24,000 | 41.500°N - 41.375°N | 94.875°W - 94.750°W | o41094d7.tif | |||||||
| Anita SW | 7.5deg x 7.5deg | 1:24,000 | 41.375°N - 41.250°N | 95.000°W - 94.875°W | o41094c8.tif | |||||||
| Anson | 7.5deg x 7.5deg | 1:24,000 | 40.625°N - 40.500°N | 91.875°W - 91.750°W | o40091e7.tif | |||||||
| Aplington | 7.5deg x 7.5deg | 1:24,000 | 42.625°N - 42.500°N | 93.000°W - 92.875°W | o42092e8.tif | |||||||
| Arbor Hill | 7.5deg x 7.5deg | 1:24,000 | 41.375°N - 41.250°N | 94.375°W - 94.250°W | o41094c3.tif | |||||||
| Arcadia | 7.5deg x 7.5deg | 1:24,000 | 42.125°N - 42.000°N | 95.125°W - 95.000°W | o42095a1.tif | |||||||
| Argyle | 7.5deg x 7.5deg | 1:24,000 | 40.625°N - 40.500°N | 91.625°W - 91.500°W | o40091e5.tif | |||||||
| Arispe | 7.5deg x 7.5deg | 1:24,000 | 41.000°N - 40.875°N | 94.250°W - 94.125°W | o40094h2.tif | |||||||
| Arlington | 7.5deg x 7.5deg | 1:24,000 | 42.750°N - 42.625°N | 91.750°W - 91.625°W | o42091f6.tif | |||||||
| Armstrong | 15min x 15min | 43.500°N - 43.250°N | 94.500°W - 94.250°W | |||||||||
| Armstrong | 7.5deg x 7.5deg | 1:24,000 | 43.500°N - 43.375°N | 94.500°W - 94.375°W | o43094d4.tif | |||||||
| Armstrong SE | 7.5deg x 7.5deg | 1:24,000 | 43.375°N - 43.250°N | 94.375°W - 94.250°W | o43094c3.tif | |||||||
| Ash Creek | 7.5deg x 7.5deg | 1:24,000 | 43.625°N - 43.500°N | 96.250°W - 96.125°W | o43096e2.tif | |||||||
| Ashton | 7.5deg x 7.5deg | 1:24,000 | 43.375°N - 43.250°N | 95.875°W - 95.750°W | o43095c7.tif | |||||||
| Atalissa | 7.5deg x 7.5deg | 1:24,000 | 41.625°N - 41.500°N | 91.250°W - 91.125°W | o41091e2.tif | |||||||
| Atlantic | 7.5deg x 7.5deg | 1:24,000 | 41.500°N - 41.375°N | 95.125°W - 95.000°W | o41095d1.tif | |||||||
| Atlantic SW | 7.5deg x 7.5deg | 1:24,000 | 41.375°N - 41.250°N | 95.250°W - 95.125°W | o41095c2.tif | |||||||
| Attica | 7.5deg x 7.5deg | 1:24,000 | 41.250°N - 41.125°N | 93.125°W - 93.000°W | o41093b1.tif | |||||||
| Audubon | 7.5deg x 7.5deg | 1:24,000 | 41.750°N - 41.625°N | 95.000°W - 94.875°W | o41094f8.tif | |||||||
| Audubon | 15min x 15min | 41.750°N - 41.500°N | 95.000°W - 94.750°W | |||||||||
| Aurelia | 7.5deg x 7.5deg | 1:24,000 | 42.750°N - 42.625°N | 95.500°W - 95.375°W | o42095f4.tif | |||||||
| Aurelia | 15min x 15min | 42.750°N - 42.500°N | 95.500°W - 95.250°W | |||||||||
| Aureola | 7.5deg x 7.5deg | 1:24,000 | 43.000°N - 42.875°N | 93.000°W - 92.875°W | o42092h8.tif | |||||||
| Austin | 60min x 60min | 1:100,000 | 44.000°N - 43.500°N | 93.000°W - 92.000°W | f43092e1.tif | |||||||
| Austin | 15min x 15min | 43.750°N - 43.500°N | 93.000°W - 92.750°W | |||||||||
| Avery | 7.5deg x 7.5deg | 1:24,000 | 41.125°N - 41.000°N | 92.750°W - 92.625°W | o41092a6.tif | |||||||
| Avoca | 15min x 15min | 41.500°N - 41.250°N | 95.500°W - 95.250°W | |||||||||
| Avoca | 7.5deg x 7.5deg | 1:24,000 | 41.500°N - 41.375°N | 95.375°W - 95.250°W | o41095d3.tif | |||||||
| Avoca NW | 7.5deg x 7.5deg | 1:24,000 | 41.500°N - 41.375°N | 95.500°W - 95.375°W | o41095d4.tif | |||||||
| Avoca SE | 7.5deg x 7.5deg | 1:24,000 | 41.375°N - 41.250°N | 95.375°W - 95.250°W | o41095c3.tif | |||||||
| Ayrshire | 7.5deg x 7.5deg | 1:24,000 | 43.125°N - 43.000°N | 94.875°W - 94.750°W | o43094a7.tif | |||||||
| Azen | 7.5deg x 7.5deg | 1:24,000 | 40.625°N - 40.500°N | 92.125°W - 92.000°W | o40092e1.tif |