Mad Creek Sub-basin Fish Passage Improvement Projects

The Mad Creek drainage is 1 of 4 sub-basins in the Mid­dle Reach North San­ti­am (i.e. the area just down­stream of Detroit and Big Cliff Dams down to Lyons) that pro­vides spawn­ing and rear­ing habi­tat for ESA list­ed threat­ened pop­u­la­tions of Upper Willamette Riv­er (UWR) Chi­nook salmon and (UWR) Win­ter Steel­head. The Mad Creek sub-basin, locat­ed near the City of Gates, con­sists of two peren­ni­al streams orig­i­nat­ing in forest­ed uplands: Mad Creek & Lit­tle Rock Creek. 


2013 Mad Creek/Gates Bridge East Project

To mit­i­gate the impacts of the I‑5 San­ti­am-Kue­bler Ore­gon Depart­ment of Trans­porta­tion (ODOT) project, Nation­al Marine Fish­eries Ser­vice (NMFS) issued a bio­log­i­cal opin­ion (BO) requir­ing ODOT to improve exist­ing fish pas­sage con­di­tions on Mill Creek near the Kue­bler project site. After dis­cus­sions between ODOT and NMFS, NMFS issued a let­ter with a fol­low-up email with the con­clu­sion that the mit­i­ga­tion mea­sures ini­tial­ly set forth in the BO for the ODOT Project would be bet­ter reme­died in the form of off-site fish pas­sage restora­tion and habi­tat enhance­ment as agreed among ODOT, NMFS and the North San­ti­am Water­shed Coun­cil (NSWC) in order to meet the terms and con­di­tions of the ini­tial BO. As part of the mit­i­ga­tion ODOT retained the ser­vices of Linn Coun­ty to replace the par­tial fish bar­ri­er (under­sized cul­vert) on Mad Creek near the con­flu­ence of the North San­ti­am Riv­er with a fish pass­able bridge cross­ing. In Octo­ber of 2013 Linn Coun­ty com­plet­ed this project.



2001 Mad Creek Stream Cross­ing Improve­ment Project

The North San­ti­am Water­shed Coun­cil in part­ner with the Linn Coun­ty Pub­lic Works received an Ore­gon Water­shed Enhance­ment Board (OWEB) grant in 2001 titled the Mad Creek Stream Cross­ing Improve­ment Project. This project was locat­ed upstream of where the recent­ly com­plet­ed 2013 bridge project is locat­ed.  This Mad Creek stream cross­ing had been iden­ti­fied by the Ore­gon Depart­ment of Fish and Wildlife (ODFW) as an imped­i­ment to fish pas­sage. Both juve­nile and adult win­ter steel­head had been impact­ed by the bar­ri­er and ODFW had list­ed the site as high pri­or­i­ty in the ODFW Cul­vert Inven­to­ry of 1997. The OWEB funds award­ed were used to replace two under­sized cul­verts with a bridge  which opened up prime spawn­ing and rear­ing habi­tat for ESA list­ed Chi­nook salmon and win­ter steel­head. This project was com­plet­ed in Octo­ber of 2002.