Providing interpretive education on wetlands and wildlife, panoramic views, water quality, weather, natural resource management, trails, bird watching, recreation, exhibits, displays and an eagles nest, Jackson Bottom Wetlands Preserve is a treasure of the Hillsboro community.
Jackson Bottom Wetlands Preserve — southern end of Preserve
The Tualatin River drains an area of 712 square miles. The river generally flows in easterly direction from its headwaters in the Coast Range to its confluence with the Willamette River. The river is approximately 83 miles long, with several tributaries, including Scoggins, Gales, Dairy, Rock and Fanno Creeks.
Jackson Bottom Wetlands Preserve is located in the 3000-acre Jackson Bottom floodplain of the Tualatin River. Jackson Bottom is located just downriver of the Dairy Creek confluence with the Tualatin. In winter and spring, as a result of significant precipitation events, the Tualatin River overflows onto large areas of the Preserve. Most of the Preserve is at 128-130 feet MSL (above Mean Sea Level). The water quality monitoring site at the Preserve is at River Mile (RM) 44.4. (RM 0 is at the confluence with the Willamette River.)
Jackson Bottom Slough is the main channel through which water drains from the Jackson Bottom floodplain into the Tualatin River. The slough is also the main route that flood waters from the Tualatin River enter the floodplain. Water quality monitoring of the slough commenced in November 2011. This monitoring site provides water quality data to support and evaluate habitat restorations at the Preserve.
Monitoring at the Gene Pool site started in 2003 and was discontinued in July 2011. The area at the Gene Pool was part of a Ducks Unlimited restoration that occured in 2011. Water quality data from the Gene Pool site are available upon request.
2600 SW Hillsboro Hwy. Hillsboro, OR 97123|fax: 503-681-6277|phone: 503-681-6206