WASHINGTON -- Tule River Tribe Chairman Ryan Garfield urged senators Thursday to help resolve a long-running water dispute that still has some life in it.

Garfield found a sympathetic Capitol Hill audience but some Obama administration resistance as he championed legislation providing $3 million to study a potential new reservoir near Porterville. If built, the small reservoir would funnel water to a tribe that has long needed it.

"The tribe cannot and will not meet its water needs without constructing a reservoir," Garfield told the Senate Water and Power Subcommittee.

The legislation introduced by Democratic Sen. Dianne Feinstein of California would authorize study of a 5,000-acre-foot reservoir at the confluence of Cedar Creek and the south fork of the Tule River.

Earlier this month, the House of Representatives approved an identical bill by Rep. Devin Nunes, R-Visalia.

But the Obama administration, as had the Bush administration before it, contends it's premature to embark on a full-blown feasibility study for a new Tule River reservoir.

Bureau of Reclamation Commissioner Michael Connor told senators Thursday that officials should first analyze an initial study prepared for the tribe.

"We need to come to the table and do our assessment," Connor said, adding that "I'm going to go back and see if we can find (the) resources we need to weigh in."

Connor said he'd like the bureau's work to be done sometime "this fiscal year."

Lawmakers already have negotiated to ensure none of the new reservoir water would be used to support tribal gambling.

Even if it passes against administration resistance, though, the Tule River Tribe Water Development Act is far from the final step in settling a water dispute that dates back to the 19th century.

Once the Tule River reservoir study is authorized, a separate bill must provide the money. Reservoir feasibility studies typically take three to five years, though the Tule River study is supposed to take two years.

Once the feasibility study is done, reservoir construction must be authorized. Then, another bill would be needed to provide construction money.

Congress also will have to complete legislation approving the overall water settlement.

About 900 people live on the 58,000-acre reservation. In the 1870s, the Tulare County reservation was shifted eastward to a rocky location that lacked reliable water supplies. Negotiations over securing a more reliable water supply dragged on for a decade until a settlement was reached in 2007.

The reporter can be reached at mdoyle@mcclatchydc.com or (202) 383-0006.