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Hamilton Island

  • Portage Drive 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 10:30 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

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.



  • White: Beginner (about 2 Km, 8-10 controls, easy, on-trail and near-trail navigation)
  • Yellow: Beginner / Intermediate (about 3 Km, 10-12 controls, on-trail and near-trail navigation)
  • Orange: Intermediate (about 4 Km, 10-12 controls, some off-trail, mostly on-trail navigation)
  • Green: Advanced (about 5 Km, 15+ controls, mostly off-trail navigation.)

E-punch will be used on all courses.  Rental fee is $1.



See a map of a previous event here.



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 help out AND still run your course of choice
  • 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 volunteer at this event. For more details, see the Volunteer pages.



Results are posted to the Events & Results web page a few days after the event.



This event is FREE.



Meet director: Meet director Brian Hauck

Map and Directions

Start is in the (small) city of North Bonneville WA, near Bonneville Dam.

  1. From Portland, take I-84 East towards the Dalles till you hit Cascade Locks (Exit 44).
  2. Take Bridge of the Gods (toll $1) over the Columbia River to the Washington side.
  3. Turn left on HWY 14/Evergreen Hwy.
  4. Go 3.5 miles - Go past the dam. Turn left into the entrance of North Bonneville. Take an immediate right onto Cascade Drive (at Chevron Station).
  5. Use bathroom at Chevron, this is the event restroom if needed.
  6. Go about a 1/4 mile and turn left on Portage Dr. The start is at the baseball field.