Spawning Data Homepage

This section contains spawning information for Chum, Fall Chinook and other salmon species. Data is collected at Ives & Pierce Islands, Hamilton & Hardy Creeks, Lower Columbia rivers, Washington tributaries, Multnomah Falls, and I-205. Data available in navigation is described below.

Ives Island: Realtime and historic Columbia River water temperature and river height information for the Ives Island/Pierce/Hamilton Creek complex.
Photographs: Salmon, redds and habitat.
Redd Maps: Ives/Pierce Islands complex, Multnomah Falls and I-205.
Seining Data: Fork length distribution of juvenile chinook sampled below Bonneville Dam.
Spawning Ground Surveys: Count of live, dead and redds observed in Columbia Basin. This includes the Ives Complex, Hamilton and Hardy Creeks, Lower Columbia River and Washington tributaries.
Strandings and Entrapment: Ives and Pierce Island Area and below Bonneville.
Trapping Data: Counts of live chum smolt in Hardy and Hamilton Creek.
Water Temperature and Emergence Dates: Temperature and Emergence dates including Columbia River water temperature, temperature units and emergence dates. Comparision of emergence dates to catch dates.