The federal government has come up with dozens of ways to enhance the diminishing flow of the Colorado River, which has long struggled to keep seven states and roughly 25 million people hydrated.

Among the proposals in a report by the Bureau of Reclamation, parts of which leaked out in advance of its expected release this week, are traditional solutions to water shortages, like decreasing demand through conservation and increasing supply through reuse or desalination projects.

But also in the mix, and expected to remain in the final draft of the report, is a more extreme and contentious approach. It calls for building a pipeline from the Missouri River to Denver, nearly 600 miles to the west. Water would be doled out as needed along the route in Kansas, with the rest ultimately stored in reservoirs in the Denver area.

Experts say the plan is reminiscent of those proposed in the middle of the last century, when grand and exorbitant federal water projects were commonplace — and not, with the benefit of hindsight, always advisable.