TV

What to Watch on Thursday: Colorado River doom, Olympics preview

In “Killing the Colorado,” Norm Gaume overlooks the Gila Valley in Southwest New Mexico. Supporters of diversion believe that new sources of sustainable water can revive agriculture in the valley.
In “Killing the Colorado,” Norm Gaume overlooks the Gila Valley in Southwest New Mexico. Supporters of diversion believe that new sources of sustainable water can revive agriculture in the valley. Discovery Channel

Killing the Colorado (9 p.m., Discovery) – A two-hour special looking at the slow, man-made demise of the Colorado River – a river that sustains 40 million people.

Also on tonight . . .

Rio Olympics Preview Special (8 p.m., NBC) – Bob Costas introduces the host city, addressing all of its related topics (assuming that means security, killer mosquitoes, poopy water, unstable infrastructure, etc.). Also, profiles of athletes, including Michael Phelps, Katie Ledecky, Usain Bolt and others.

Queen of the South (10 p.m., USA) – Camila sends Teresa out on a dangerous but profitable midnight mission, and Brenda puts her crew in the line of fire.

Ice Road Truckers (10 p.m., History) – In the Season 10 premiere, companies anticipate financial ruin and communities face deprivation as experts predict one of the shortest and warmest winters on record.

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