Flow and Spill Data

• Daily Rpt
• Spill Update
• Hourly and Daily Queries

Daily Flow and Spill Report

• Daily Flow and Spill for the Last Two Weeks
  (The daily midnight to midnight average)

Spill Season Update

• 2011 Spill Season Update (Graphs daily actual spill
  versus court order spill, April through August)

Hourly and Daily Average Flow (Daily average is midnight to midnight)

• Historic Hourly or Daily Flows (Current data is 1-5 weeks behind)

IMPORTANT NOTE: Finalized data is received on the 7th of each month for the Previous Month! Finalized data available here in general lags one month behind the current date.

Data Available

	Hourly Flow	Daily Flow
Site	Start Date	Start Date
Bonneville Dam (BON)	1974-01-01	1964-01-01
Brownlee Dam (BRN)		1974-11-01
Chief Joseph Dam (CHJ)	2001-01-01	2001-01-01
Dworshak Dam (DWR)	1974-01-01	1974-01-01
Grand Coulee Dam (GCL)	1974-01-01	1974-01-01
Hells Canyon Dam (HCD)		1974-11-01
Hungry Horse Reservoir (HGH)	2002-01-01	2002-01-01
Ice Harbor Dam (IHR)	1974-01-01	1964-01-01
John Dam Dam (JDA)	1974-01-01	1968-04-22
Lower Granite Dam (LGR)	1975-04-01	1975-04-01
Little Goose Dam (LGS)	1974-01-01	1970-03-01
Libby Reservoir/Dam	1998-12-31	1998-12-31
Lower Monumental Dam (LMN)	1974-01-01	1969-04-01
McNary Dam (MCN)	1974-01-01	1964-01-01
Priest Rapids Dam (PRD)	1974-01-01	1974-01-01
Rock Island Dam (RIS)	1974-01-01	1974-01-01
Rocky Reach Dam (RRH)	1974-01-01	1974-01-01
The Dalles Dam (TDA)	1974-01-01	1964-01-01
Wanapum Dam (WAN)	1974-01-01	1974-01-01
Wells Dam (WEL)	1974-01-01	1974-01-01

Page last updated on: December 1, 2011

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