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Hamilton Island

  • Unnamed Road North Bonneville, WA, 98639 United States (map)

Event overview
Hamilton Island lies along the Washington shoreline of the Columbia River, upstream of Beacon Rock, and downstream of Bonneville Dam and the former Cascade Rapids. Hamilton Island used to be an island; however, it is now landlocked. In the 1970s the upper part of "Hamilton Slough", bordering the northeast side of Hamilton Island, was filled in with debris from the construction of Bonneville's North Powerhouse. The lower part of Hamilton Slough became part of Hamilton Creek, which borders the west and northwest side of Hamilton Island. On the east and south is the Columbia River.  The terrain is mostly wide open and runnable with one large low hill.  E-punch will be used on all courses. 

Due to US Corps of Engineers regulations, fees cannot be collected on Hamilton Island.  Thus, no fees will be collected for this event and it's FREE.

 - Registration 10:00 am - 12:45 pm
 - Instruction Clinics 11:00 am - 1:00 pm as needed
 - Course starts 11:00 am - 1:00 pm
 - Courses close 3:00 pm
Note:  All teams must check out through the course finish gate before leaving the park, even if the team does not finish the course or returns after the course closes.

The standard four flavors of courses will be available:

  •  White (Beginner, about 1 mile, 8-10 controls, easy, mostly on-trail hiking)
  •  Yellow (Beginner / Intermediate, about 2 miles, 10-12 controls, easy, on-trail and near-trail navigation)
  •  Orange (Intermediate, about 3.5 miles, 12+ controls, some off-trail, some on-trail navigation)
  •  Green (Advanced, about 4.5 miles, 12+ controls, mostly off-trail navigation)


All CROC orienteering events are put on by volunteers, and the meet director can almost always used some extra hands.

Please keep in mind:

  • No prior experience is needed for many of the tasks
  • You can still run your course of choice and help out
  • Your entry fee is free if you help out with a meet!  
  • Typical ways to assist are:  helping with starts and finishes, checking in folks at registration, and picking up control flags after the course closes.

Please contact the meet director at the email address on the bottom of this page if you'd like to help out with this event.

For more details, see the volunteer pages.

Registration and other costs
 - The event is FREE and open to the public.
 - Beginners are welcome at this and all CROC events.  Beginner orienteering clinics are taught as needed.

Results: See results on the Events / Results page, posted a few days after the event.

Brian Hauck

Earlier Event: September 30
Zer-O Series - Dice-O at Grant Park
Later Event: October 24