@misc{indiciae90708777c11b, title = {Development of an 11- and 14-Digit Hydrologic Unit Boundary Layer for the Hatchie-Obion River Basin Using a Geographic Information System}, author = {Hugh L. Nelson and Aimee C. Downs and Steve D. Crabtree and Doug H. Hines}, year = {1997}, doi = {10.3133/ofr97623}, url = {https://pubs.usgs.gov/publication/ofr97623}, note = {Source identifier: ofr97623} }