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Umatilla River wolf pups
Umatilla River wolf pups
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Umatilla River Pack Timeline of Events

Umatilla Pack Area of Known Wolf Activity map


February 24, 2015 – Pack summary from 2014 Annual Report:

This pack was first identified in 2013 in the central portion of the Mt Emily Unit. The breeding male is a radio-collared disperser from the Walla Walla Pack. A subadult female was collared (OR28) in 2014 and her data shows the pack using a 257mi2 area comprising 96% public lands. The pair produced at least four pups that survived to the end of the year and was counted as a breeding pair. Two depredation incidents were attributed to this pack in 2014.


August 27, 2014 – Umatilla River pack depredation qualifies

August 15, 2014Probable depredation in Umatilla County – Umatilla River wolves

June 23, 2014Two depredations qualify for Umatilla River Pack

June 17, 2014Confirmed depredation in Umatilla County – Umatilla River Pack

June 17, 2014Confirmed depredation in Umatilla County – Umatilla River Pack

February 25, 2014 – From the 2013 Oregon Wolf Conservation and Management Annual Report

Umatilla River Pack: First discovered in 2011 in the northern part of the Mt Emily Unit. The pair was counted as a breeding pair for the second year with at least 2 pups. This pack was responsible for 3 confirmed depredations in 2013 with 1 injured sheep and losses of 6 sheep and 1 goat. The breeding male and 2 pups are GPS radio-collared. The collar data shows the pack using a 137 mi2 area with 77% of locations on private lands, 5% public land and 18% tribal land.


October 29, 2013

“Probable” depredation by Umatilla River Pack

October 28, 2013  Young Umatilla River wolves collared after incidental capture

ODFW biologists radio-collared and released two young wolves in a forested area east of Weston, Ore. on Oct. 26. 

The 55-pound male and a 50-pound female are both young-of-the-year members of the Umatilla River Pack in Umatilla County.  

Both wolves were incidentally trapped on private land by a licensed trapper who was intending to trap coyotes. They were trapped at the same time in two separate foot-hold traps in close proximity. The trapper followed regulations and immediately reported the situation.   

ODFW biologists were able to quickly respond and safely collar and release the wolves. The two wolves are the third and fourth incidental captures recorded in Oregon. In the two previous incidental captures, the trappers also reported the incidents and the wolves were safely released.

The Umatilla River wolves were fitted with lighter-weight GPS collars ideal for younger wolves. These types of collars collect fewer locations than regular GPS collars, but this pack already has a GPS-collared adult providing location data. The GPS collars on these younger wolves should prove most useful when the wolves disperse.

September 6, 2013  Change to Umatilla River Qualifying Incident

After further review, ODFW has rescinded the decision to qualify the Aug. 23, 2013 confirmed depredation by the Umatilla River pack as a Qualifying Incident under new wolf management rules (OAR 635-110-0010(8)(a-c).

Under the new rules, ODFW needs to develop and post a Conflict Deterrence Plan within 14 days of the first depredation by a pack. In this case, the Umatilla River Pack Conflict Deterrence Plan did not meet the 14-day deadline. The decision does not change the original confirmation that a wolf or wolves were the cause of death of the goat in this instance.

This change reduces the number of Qualifying Incidents for the Umatilla River Pack from two to one. ODFW only considers lethal control for depredating wolves when there are four Qualifying Incidents within a six-month time period.

August 30, 2013  Conflict Deterrence Plan released for Umatilla River Pack

ODFW has posted the Conflict Deterrence Plan for the Umatilla River Pack. ODFW had many discussions with livestock producers in the Umatilla River Pack area about the appropriate non-lethal measures to minimize conflict with wolves. These discussions led to development of this plan and its provisions are being implemented by many producers already.

Under new wolf management rules, ODFW and livestock producers are required to develop and publicly disclose Conflict Deterrence Plans in Areas of Depredating Wolves. The Conflict Deterrence Plan could be updated from time to time based on changing conditions, pack behavior, knowledge about wolf management and comments by landowners, livestock producers and other relevant interests. To be notified of changes to the Conflict Deterrence Plan, subscribe to receive changes to the Wolf-Livestock section.

August 27, 2013

ODFW has confirmed two additional depredations—an injured cow by the Imnaha pack (8/22/13), and a dead goat by the Umatilla River pack (8/23/13). Investigation summaries for these depredations are posted on the website.

The Umatilla River pack depredation is a “qualifying incident” (see report), meaning the landowner was using appropriate preventative measures to minimize wolf-livestock conflict. (ODFW has rescinded decision to qualify Aug. 23 incident; see Sept. 6 entry above for more information.) ODFW is waiting on information from the livestock producers to determine if the two confirmed Imnaha Pack depredations (from 8/21 and 8/22) are qualifying incidents.

June 3, 2013

Confirmed Depredation is a Qualifying Incident for pack.

May 22, 2013  Sheep depredation in northern Umatilla County

On May 21, ODFW confirmed that 6 sheep were depredated by wolves which resulted in four dead (3 lambs, 1 ewe), one injured (ram), and one missing (lamb). Wolf tracks were found in the pasture of the dead sheep, and radio-collar data showed that at least one wolf of the Umatilla River Pack was in the area on the night of the depredation. Evidence gathered showed a similar pattern of attack as the depredation events in 2012 in this same general area.

January 16, 2013 – The ending year-2012 wolf count for the Umatilla River wolves is 4 and Umatilla River are a “breeding pair” for 2012. More information


August 15, 2012 - Pictures taken Aug. 2, 2012 from an ODFW remote camera show that there are at least two wolf pups with the Umatilla River pair. With four individuals in the group, it is now considered a pack.


July 08, 2012 - Umatilla River wolf pair have pups  ODFW surveys also confirmed that the Umatilla River wolf pair have pups. Multiple tracks were found during a summer survey but the exact number of pups is still unknown.

June 20, 2012 - OR14, a wolf using the northern Mt Emily wildlife management unit, was GPS collared by ODFW in the Weston Mountain area north of the Umatilla River on June 20. The gray-colored male wolf weighed 90 pounds and was estimated to be at least 6 years old.

The collared wolf is believed to be responsible for the early May depredations of sheep in the area. The new collar will allow ODFW to better understand his movements and use additional tools to help prevent further depredation. It will also help ODFW communicate with area livestock producers about his whereabouts. OR14 is one of two known adult wolves in the area, and though reproduction is suspected, ODFW has not yet confirmed pups for these wolves.


August 2011 – Northern Mt Emily Unit wolf seen on remote camera


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