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Klamath Basin Water Distribution Update

January 2020

This site contains the stream location, status of water calls by senior users, whether regulation of water has occurred, and the priority date to which junior water rights are not allowed to be diverting water for the Klamath Basin in Oregon. If you are experiencing difficulty finding information, please call the District 17 Watermaster's office at 541-883-4182. This information will help water users know when water is available for diversion.

Please note: The graphs provide information on stream flow relative to the Klamath Tribes determined claims for instream flows.  The graphs displayed do not indicate if regulation is or is not in effect.

On March 3, 2020 the Klamath Watermaster Office received calls for enforcement of a determined claim for instream flows. This call for enforcement initiates the validation process. As of March 3, 2020, the call for instream flows on the Williamson River has been validated and regulation notices will be mailed shortly to all out of stream users on the Williamson River and all tributaries to the Williamson River. The Watermaster's staff will be monitoring flows on other stream in the Upper Basin.

If you have any questions, please contact the Watermaster's office at 541-883-4182.​

Like most western states, Oregon follows the “prior appropriation” doctrine of water use, often referred to as “first in time, first in right.” This means that when there is insufficient water to satisfy all water rights, water users with senior priority dates make a “call” to receive water, and users with junior water rights are shut off until the rights of the senior users making the call are satisfied.

Prior to distributing water from junior users to senior users, the Department’s watermaster staff make field measurements to validate the call and determine whether there is adequate water at the senior right’s point of diversion to satisfy the senior user’s water right demand. Once the calls are validated, the Department must begin distributing water from junior (newer) water right diversions to benefit the senior users.

The Klamath Tribes hold determined water right claims with a priority date of time immemorial, making them the most senior water right holders in the Upper Klamath Basin. The determined claims allow the Tribes to provide for a healthy riparian habitat among other instream needs. The Department’s web page provides the latest information on the Klamath Tribes’ instream determined claims, displaying a graph for the water year and showing the current mean daily streamflow along with past streamflow measurements made by Department staff.

Water distribution notification occurs by postal mailing of a notice of regulation, which requires junior water users to shut off their diversions, pumps, or wells. Water management through regulation and distribution occurs across much of Oregon every year, and has for a century. Watermaster staff follow up with field checks to individual points of diversion to ensure that water use is in compliance with regulation orders.

2020 Dispute Between U.S. BOR and KID

The following sections list information obtained by the Department as part of its ongoing investigation in aid of distribution of water following notification of a dispute between the Klamath Irrigation District and the U.S. Bureau of Reclamation pursuant to ORS 540.210.


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