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<br />Thble 1. -Proposed study units for the National Water-Quality Assessment Program - Continued <br /> <br />1',J <br />1-,. <br />en <br /> <br />Map identification <br />(Fig. 1) <br /> <br />Study-unit name <br /> <br />State( s) <br /> <br />CENTRAL REGION <br /> <br />~[:,... <br /> <br />31. Eastern Iowa Basins <br />32. Ozark Plateau <br />33. Central Oklahoma <br /> <br />lA, MN, IL <br />MO, AR, OK, KS <br />OK <br />TX <br />TX <br />NE <br /> <br />34, Trinity River Basin <br /> <br /> <br />35. Balcones Fault Zone <br /> <br /> <br />36. Central Nebraska Basin <br /> <br />37, Kansas River Basin <br /> <br />KS, NE, CO <br />CO <br />KS, TX, OK, CO <br />TX,NM <br />CO, WY, NE <br />WY, CO, NE <br />SD,WY <br />MT, WY, ND <br />CO,UT <br />NM,CO <br />UT, ID, WY <br />MT, ID, WA <br /> <br /> <br />38. Upper Arkansas River Basin <br /> <br /> <br />39. Central High Plains <br /> <br /> <br />40. Southern High Plains <br /> <br /> <br />41. South Platte Basin <br /> <br /> <br />42. North Platte Basin <br /> <br /> <br />43. Cheyenne and Belle Fourche Basins <br /> <br /> <br />44. Yellowstone Basin <br /> <br /> <br />45. Upper Colorado Basin <br /> <br /> <br />46. Rio Grande Valley <br /> <br /> <br />47. Great Salt Lake Basins <br /> <br />48. Northern Rockies Intermontane Basins <br /> <br />WESTERN REGION <br /> <br />49. Upper Snake River Basin <br /> <br /> <br />50. Southern Arizona <br /> <br /> <br />51. Mid'Columbia Basin <br /> <br /> <br />52. Yakima River Basin <br /> <br /> <br />53. Puget Sound Drainages <br /> <br /> <br />54. Willamette Basin <br /> <br /> <br />55. Sacramento Basin <br /> <br /> <br />56. Western Great Basin <br /> <br /> <br />57. San Joaquin-Thlare <br /> <br /> <br />58. Santa Ana Basin <br /> <br />ID, WY, NV <br />" <br />AZ <br />WA <br />WA <br />WA <br />OR <br />CA,OR <br />NY,CA <br />CA <br />CA <br />HI <br />AK <br /> <br /> <br />59. Oahu <br />60. Cook Inlet Basin <br /> <br />5 <br /> <br />1 <br />