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TMF - Three Mile Falls Fish Ladder and Juvenile Bypass, located approximately 2.5 miles south of Umatilla, OR. This site, while still active, is currently not a PTAGIS maintained site.

Driving Directions

From Tri-Cities
- Take US-395 south
- Take the I-82 E ramp to Pendleton/Umatilla - go 21 miles
- Take the US-395/US-730 Exit 1 to Umatilla/Hermiston - go 0.2 miles

To Fish Ladder and PIT Tag Trailer (right bank)
- Bear right at 6th St/Columbia River Hwy - go 0.4 miles
- Turn left onto Umatilla River Rd. - go 2.5 miles
- Turn right into parking lot
- Arrive at Three Mile Falls Dam

To Weid and Outfall (left bank)
- Bear right at 6th St/Columbia River Hwy - go 1.5 miles
- Turn left onto Powerline Rd. - go 0.6 miles
- Turn left onto canal access road - go 2.75 miles
  - Canal access road is unmarked, runs along north side of canal and under I-82 bridge
- Arrive at Three Mile Falls Dam

Historical Site Configurations

    TMF: Three Mile Falls Dam Combined
      Initial configuration.  Combines and replaces old TMJ and
      TMA detections sites.
         Seq. #100: From  8-Nov-06 To Present
                                  Juvenile Fish Sub-sa   51  52
                                  Juvenile Fish Bypass   81
                                  Adult Fish Ladder      01

    TMA: 3-Mile Falls Dam Adult Fishway
      An FS-1001M MUX transceiver now powers a single pass-by
      antenna at the counting window.
         Seq. #110: From 24-Apr-06 To  8-Nov-06
                                  Fish Ladder Viewing    01  02  03  04  05  06
         Seq. #100: From  7-Mar-02 To 24-Apr-06
                                  FS2001 PORTABLE WITH   01

    TMJ: 3-Mile Falls Dam Smolt Bypass
      Revised existing RIVER EXIT monitor name to SAMPLE FACILITY
      and added a new RIVER EXIT monitor.
         Seq. #130: From  1-Jan-06 To 12-Jul-06
                                  Sample Facility        10  11
                                  River Exit             91
         Seq. #120: From 28-Jan-04 To  1-Jan-06
                                  RIVER EXIT             10  11
         Seq. #110: From  6-Mar-00 To 28-Jan-04
                                  RIVER EXIT             10  11
         Seq. #100: From 19-Mar-99 To  6-Mar-00
                                  RIVER EXIT             10