Upper Midwest Environmental Sciences Center
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Content manager: Jim Rogala
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/reports_publications/ltrmp/water/fixed/fs_study_areas.html
Page Contact Information: Contacting the Upper Midwest Environmental Sciences Center
Page Last Modified:
October 2, 2007
Reach 1 (in Navigation Pools 4 and 5) is 100 km (60 river miles) long from Lock and Dam 3 to Lock and Dam 5. Tributaries presently sampled include
Reach 2 (in Navigation Pools 7, 8, and 9) is 61 km (38 river miles) long and extends from Upper Iowa River to the mouth of the Black River in Pool 7. Tributaries presently sampled include
Reach 3 (in Navigation Pools 12, 13, and 14) is 137 km (85 river miles) long and extends from Lock and Dam 12 to Lock and Dam 14. Tributaries presently sampled include
Reach 4 (in Navigation Pool 26 and the Middle Mississippi reach) is 77 km (48 river miles) long and extends from Lock and Dam 25 to 3 km (2 miles) below the Missouri River confluence. Tributaries presently sampled include
Reach 5 (in the Middle Mississippi reach) is 110 km (68 river miles) long and extends from Grand Tower Island to 16 km (11 river miles) above the Ohio River confluence. Tributaries presently sampled include
Reach 6 (the La Grange Pool on the Illinois River) is about 130 km (80 river miles) long and extends from the La Grange Lock and Dam to the Peoria Lock and Dam. Tributaries presently sampled include: