Stream Flow Monitoring Summary

BES maintains two sets of flow monitoring data: permanent monitoring data (as recorded by the HYDRA System and maintained by t

BES maintains two sets of flow monitoring data: permanent monitoring data (as recorded by the HYDRA System and maintained by the Data Acquisitions & Management Group) and temporary monitoring data (retrieved from the Bureau’s Janus application and maintained by Field Operations).  The permanent monitoring data has creek/river related flow data (one for Balch Creek in McLeay Park from 1985-1996 and another for the Willamette River at Ankeny Pump Station). The temporary monitoring data has flow information for the Balch, Miller, Saltzman, and Stephens Creeks, and the latter three creeks were monitored as part of the Westside Streams Monitoring project. Data for Balch Creek are available from June 1996-September 2002.  Monitoring for that location is no longer active.  Data for the Miller, Saltzman, and Stephens Creeks are available from September 2002-December 2002 and from May 2003-July 2003. Monitoring is currently active for these creeks.

 

Table: Stream Flow Monitoring

Creek

Location

Data Quality

Average Flow (cfs)

Maximum Flow (cfs)

Balch

Node ABB857 Trash Rack
McLeay Park
At Entry to Storm Pressure Line

Generally good; sporadic bad readings; summary is for the 1999-2002 period; many broken periods for the 1996-1999 period

June 99-September 2002: winter 1.9 cfs, summer 0.2 cfs

June 99-September 2002: winter 73 cfs, summer 60 cfs

Miller

12800 NW Marina Way
Drains to Multnomah Channel

Sporadic data readings, probably due to low creek flow

Mid-Late December: 1.2 cfs; Late May-Present: less than 0.1 cfs

Mid-Late December: 15.5 cfs; Late May-Present: 0.2 cfs

Saltzman

Node AAM040
Near NW Saltzman Rd. & US30 (St. Helens Rd/Columbia River Hwy)

Generally always flowing, good data

Mid-Late December: 0.4 cfs; Late May-Present: less than 0.1 cfs

Mid-Late December: 19.5 cfs; Late May-Present: 0.7 cfs

Stephens

Node ACT073
Near SW Macadam Blvd., inline with Fulton Park Blvd.

Generally always flowing; good data with sporadic bad readings

Mid-Late December: 1.9 cfs; Late May-Present: 1.0 cfs

Mid-Late December: 8.2 cfs; Late May-Present: 9.4 cfs