Water Quality Monitoring History 1988-92 Middle Snake River
assessment units listed as water quality limited under CWA Section
303(d) 12/95 IPC filed FERC relicensing applications for Bliss,
Upper Salmon Falls & Lower Salmon Falls; requested 401
water-quality certification 4/97 - EPA approved TMDLs for CWA
Section 303(d) listed waters 5/97 - IPC filed Shoshone Falls
relicensing application; requested 401 water- quality certification
5/98 - IPC submitted temperature & dissolved oxygen (DO)
monitoring plans to IDEQ 8/02 - IDEQ approved monitoring plans 8/04
- FERC issued project licenses 12/04 IPC/Agency consultation
regarding temperature & DO monitoring plans 3/05 - FERC
approved monitoring plans requiring ten-minute temperature and DO
data collection/reporting
Slide 5
Slide 6
Monitoring Analysis 1997-2011 Range of flows (Period of Record
high and low) Temperature & DO comparisons to State
Standards
Slide 7
Analysis Conclusion Water temperature and DO levels measured at
the Middle Snake River hydroelectric projects are likely indicative
of Snake river watershed conditions, which include the
hydroelectric projects. As such, IPC believes continued water
temperature and DO data collection as required by the FERC licenses
would provide little additional information as data were collected
across the recorded range of hydrologic conditions.
Slide 8
Change Process Consulted w/designated agencies regarding
temperature & DO monitoring plan modifications (IDEQ, IDFG,
USFWS, NOAA Fisheries) Submitted modified monitoring plans for
agency review Submitted plan modification requests to FERC FERC
approved modified monitoring plans - required trend data
collection
Slide 9
Hydroelectric Projects Trend Monitoring Sites
Slide 10
Measures and Analytes water temperature dissolved oxygen
specific conductance hydrogen ion concentration (pH) turbidity
nitrate ammonia total Kjeldahl nitrogen total phosphorus dissolved
orthophosphate suspended solids volatile suspended solids total
organic carbon dissolved total organic carbon chlorophyll a
phaeophytin Escherichia coli bacteria
Slide 11
Trend Monitoring Data Use Annual reports & five-year trend
analysis Upper Snake Rock TMDL evaluation (IDEQ) White Sturgeon
Conservation Plan Endangered & Threatened snails