Download Ohio 12-digit subwatersheds in shape file format

Abbreviations: HU=Hydrologic Unit, Mb=Megabytes, Kb=Kilobytes
Data are shape files in UTM zone 17, NAD83

See update descriptions at bottom of the page.

File	Note
Metadata	Left click for metadata online viewing, right click for metadata download
oh_huc12.zip, 34.7 Mb, 9/24/09	State wide 12-digit HU layer
Ottawa.zip, 283 Kb, 8/27/09	12-digit HUs for Subbasin containing Ottawa River (04100001)
RiverRaisin.zip, 441 Kb, 8/27/09	12-digit HUs for River Raisin (04100002)
StJoseph.zip, 595 Kb, 8/27/09	12-digit HUs for St. Joseph River (04100003)
StMarys.zip, 413 Kb, 8/27/09	12-digit HUs for St. Marys River (04100004)
UpperMaumee.zip, 104 Kb, 8/27/09	12-digit HUs for Upper Maumee River (04100005)
TiffinR.zip, 389 Kb, 8/27/09	12-digit HUs for Tiffin River (04100006)
Auglaize.zip, 824 Kb, 8/27/09	12-digit HUs for Auglaize River (04100007)
Blanchard.zip, 421 Kb, 8/27/09	12-digit HUs for Blanchard River (04100008)
LowerMaumee.zip, 491 Kb, 8/27/09	12-digit HUs for Lower Maumee River (04100009)
Cedar_Portage.zip, 455 Kb, 8/27/09	12-digit HUs for Cedar-Portage Subbasin (04100010)
Sandusky.zip, 1.2 Mb, 8/27/09	12-digit HUs for Sandusky River (04100011)
Huron_Vermilion.zip, 468 Kb,  8/27/09	12-digit HUs for Huron and Vermillion Rivers (04100012)
Black_Rocky.zip, 487 Kb, 8/27/09	12-digit HUs for Black and Rocky Rivers (04110001)
Cuyahoga.zip, 593 Kb, 8/29/09	12-digit HUs for Cuyahoga River (04110002)
Chagrin_Ashtabula.zip, 396 Kb,  8/27/09	12-digit HUs for Chagrin & Ashtabula River (04110003)
Grand.zip, 327 Kb, 8/29/09	12-digit HUs for Grand River (04110004)
Conneaut.zip, 390 Kb, 8/29/09	12-digit HUs for Subbasin containing Conneaut River (04120101)
LittleBeaver.zip, 1.1 Mb, 8/27/09	12-digit HUs for Little Beaver Cr., etc. (05030101)
Shenango.zip, 418 Kb, 8/27/09	12-digit HUs for Shenango River (05030102)
Mahoning.zip, 755 Kb, 8/27/09	12-digit HUs for Mahoning River (05030103)
UpperOhio_Wheeling.zip, 930 Kb,  8/27/09	12-digit HUs for Ohio R. below Cross Cr. to below Fish Cr. (05030106)
LittleMuskingum_MiddleIsland.zip, 1.2 Mb,  8/27/09	12-digit HUs for Ohio R. below Fish Cr. to above Muskingum R. (05030201)
UpperOhio_Shade.zip, 1.1 Mb, 8/27/09	12-digit HUs for Ohio R. below Muskingum R. to above Kanawha R. (05030202)
Hocking.zip, 1.1 Mb, 8/27/09	12-digit HUs for Hocking River (05030204)
Tuscarawas.zip, 2.2 Mb, 8/27/09	12-digit HUs for Tuscarawas River (05040001)
Mohican.zip, 657 Kb, 8/27/09	12-digit HUs for Mohican River (05040002)
Walhonding.zip, 831 Kb, 8/27/09	12-digit HUs for Walhonding River (05040003)
Muskingum.zip, 1.4 Mb, 8/27/09	12-digit HUs for Muskingum River (05040004)
WillsCr.zip, 736 Kb, 8/27/09	12-digit HUs for Wills Creek (05040005)
Licking.zip, 653 Kb, 8/27/09	12-digit HUs for Licking River (05040006)
UpperScioto.zip, 2.0 Mb, 8/27/09	12-digit HUs for Upper Scioto (05060001)
LowerScioto.zip, 1.7 Mb, 8/27/09	12-digit HUs for Lower Scioto (05060002)
PaintCr.zip, 742 Kb, 8/27/09	12-digit HUs for Paint Creek (05060003)
UpperGreatMiami.zip, 1.7 Mb, 8/27/09	12-digit HUs for Upper Great Miami River (05080001)
LowerGreatMiami.zip, 757 Kb, 8/27/09	12-digit HUs for Lower Great Miami River (05080002)
Whitewater.zip, 460 Kb, 8/27/09	12-digit HUs for Whitewater River (05080003)
Raccoon_Symmes.zip, 1.2 Mb, 9/24/09	12-digit HUs for Ohio R. below Kanawha R. to above Big Sandy R. (05090101)
LittleScioto_Tygarts.zip, 665 Kb, 8/27/09	12-digit HUs for Ohio R. below Big Sandy R. to above 8-digit divide (05090103)
OhioBrush_Whiteoak.zip, 1.1 Mb, 8/27/09	12-digit HUs for Ohio R. below 8-digit divide to above Little Miami R. (05090201)
LittleMiami.zip, 909 Kb, 8/27/09	12-digit HUs for Little Miami River (05090202)
MiddleOhio_Laughery.zip, 664 Kb, 8/27/09	12-digit HUs for Middle Ohio River containing Laughery Cr. (05090203)
UpperWabash.zip, 591 Kb, 8/27/09	12-digit HUs for Upper Wabash River (05120101)
Mississinewa.zip, 199 Kb, 8/27/09	12-digit HUs for Mississinewa River (05120103)

Update descriptions:
1. Update 7/8/08 - An error in hydrologic unit coding was found in the Sandusky subbasin (04100011).  Fixes
have been applied to Sandusky.zip and oh_huc12.zip.
2. Update 10/13/08 - The HU_10_name for HUC12 "050302020802" has been corrected from "Pond Creek-Ohio River" to "Little Sandy Creek-Ohio River".  oh_huc12.zip and OhioRiv3.zip have been corrected.
3. Update 1/8/09 - HU_12_name for HUC12 "041100010204" made consistent for 2 separate polygons that together make up the hydrologic unit.  oh_huc12.zip and BlackRoc.zip have been corrected.
4. Update 3/9/09 - Duplicate HU_12_name "Upper Rocky Fork" for HUC12 "050400020203" and "050400020204" changed to "Headwaters Rocky Fork" and "Outlet Rocky Fork", respectively.
5. Update 6/11/09 - HU_10_name for HUC12 "050902021305" corrected from "Shayler Run-East Fork Little Miami River" to "Stonelick Creek-East Fork Little Miami River".
6. Update 8/27/09 - Huc12 downstream codes were added, the data now contain complete 8-digit subbasins rather than stopping at the Ohio State Line, and one huc12 coding switch was made, namely, 050902010303 was switched with 050902010304.
7. Update 9/24/09 - HU_12_name for "050901010403" changed from "Meadow Run-Little Raccoon Creek" to "Mulga Run-Little Raccoon Creek".  Narrative descriptions corrected for "050901010401" and "050901010403" to include Meadow Run in the former HUC_12 and not in the latter.