Rivers & Lakes: Economic Engines of the Central Plains

The Central Plains (roughly Nebraska, Kansas, Oklahoma, Texas Panhandle, eastern Colorado/Wyoming) are semi-arid (20–30″ rain/yr). Surface water isn't scenery—it's the balance sheet.

1. Irrigation: The Economic Multiplier

• Ogallala Aquifer (groundwater) gets attention, but surface water (Platte, Arkansas, Canadian, Red Rivers + reservoirs) irrigates 4M+ acres.
• Crops: corn, soy, wheat, sorghum, cotton, alfalfa → $30B+ annual ag output.
• Reservoirs (Lake McConaughy, Milford, Keystone, Eufaula) provide regulated releases—critical during drought.

2. Transportation: The Forgotten Highway

• Missouri River: 735 mi navigable (Sioux City → St. Louis). Barges move 10M+ tons/yr (grain, fertilizer, scrap).
• Arkansas River: McClellan-Kerr Navigation System (445 mi, 18 locks) to Tulsa – $2B/yr commerce.
• Great Lakes connection: Chicago Sanitary & Ship Canal links Mississippi basin to Lakes/St. Lawrence.

3. Industry & Energy

• Thermoelectric cooling: 40% of regional water withdrawals (coal, nuclear, gas plants).
• Petrochemical refineries (Tulsa, Kansas City) – process water, steam.
• Food processing (meatpacking, ethanol, corn milling) – high-volume users.
• Sand/gravel mining from river beds – construction aggregate.

4. Recreation & Tourism

• Reservoir recreation: $1.2B/yr (boating, fishing, camping) – Corps of Engineers lakes alone.
• River outfitters: float trips (Niobrara, Current), guided fishing (trout tailwaters).
• Wildlife viewing: Sandhill crane migration (Platte), waterfowl (Cheyenne Bottoms).

5. Ecosystem Services (Valued but Unpriced)

• Flood attenuation (reservoirs prevented $50B+ damages since 1940s).
• Groundwater recharge (river seepage → aquifer).
• Water quality: wetlands filter nitrates, sediments.
• Biodiversity: endangered pallid sturgeon, least tern, piping plover.

Stressors

• Over-allocation (Colorado River compact logic applies to Platte/Republican).
• Climate: less snowpack, earlier runoff, more evaporation.
• Sedimentation filling reservoirs (John Redmond 50% capacity lost).
• Invasive species (zebra mussels, Asian carp, saltcedar).

Governance

Interstate compacts (Republican, Arkansas, Red River), Corps of Engineers, Bureau of Reclamation, state water offices. "First in time, first in right" (prior appropriation) dominates west of 100th meridian.