Karlson Island Wetland Enhancement

Construction Surveys

Statewide contracted with the Columbia River Estuary Task Force (CREST) to supply supplemental mapping data to support the design for breaching and lowering of existing levees. Karlson Island, located in the Lower Columbia River Estuary — and part of the Lewis and Clark Wildlife Refuge — was diked in the early 1900’s. Upon completion of project design, staking and construction, the project restored over 300 acres of estuarine wetlands.


Columbia River Estuary Task Force (CREST)


Karlson Island, located in the Lower Columbia River Estuary

Service Provider



May 13, 2016

Other Projects

Crooked River Transect Survey

Statewide partnered with Cramer Fish Sciences to provide environmental stream data for the lower Crooked River. The data consisted not only of X,Y and Z information, but also contained flow, substrate, and hydraulic controls.

View Project

Heiple Road Boundary Survey

Statewide provided boundary survey services to Columbia Land Trust for a 23.2-acre property on Heiple Road in Clackamas County, Oregon.

View Project

Miller Creek Hydrographic Survey

Statewide provided services to ESA for the hydrographic mapping of Multnomah Channel near the south tip of Sauvie Island. 

View Project
Scroll to Top

About us


Uploading Files to Statewide Land Surveying, Inc.

Please send an email to [email protected] to be granted access to Statewide’s Google Drive account. You will receive an email from Statewide via Google Drive with a link to access directory. Thank you.