1. Packwood Lake Hydroelectric Project
PM&E’s
August 9, 2007

2. Project Effects Decreased flows PME
Reduced number of bankfull flood flows
Mean average flows
Less than optimum flows in anadromous reach during some times of year
PME
Cause a bankfull flow (approximately 285 cfs for 24 hours) flow down Lake Creek in even numbered years unless one has naturally occurred during the period.
Increase base flows in August and September for spring Chinook spawning
Rev. 0

3. Project Effects PME - Increase base flows in August and September
Move project annual outage to 3 weeks during the August-September time period
Eliminates attraction flow at tailrace during shutdown
Diverts generation water to stream
Eliminates traditional September drawdown
Adjust timing to meet Chinook haul times
Use lake level to supplement base flow when operating (1 foot = ~7 cfs per month assuming no inflow)
Base plus accretion flow target of about 20 cfs at upper barrier (3+7+(9 or 10))=~20 cfs
Base flow in other months unchanged (3 to 5 cfs)
PME - Enhance habitat in anadromous reach of lower Lake Creek
Design and install stream structure to retain gravel
Place gravel in structure or provide stock for recruitment
Rev. 0

4. Placeholder – instream flows
Replace this slide with table of accretion flows from LC IFIM with a supplemental base flow column (Drop Structure releases) and a total column that shows the expected flows in the anadromous reach and how August and September base flows will be enhanced.
Hopefully show that creek flows are adequate except for Aug and Sept.
Concerns – huge flows / high lake levels during shutdown; supplemental flow needed for October.
Rev. 0

5. Placeholder – Habitat enhancement figures
Show how habitat can be enhanced
Show how habitat enhancement produces more habitat than flow
Show what you get each month
Rev. 0

6. Project Effects Isolated reach 5 (1462 feet) PME - none
Added another isolated reach to creek
?EES – how many isolated reaches are there for the rainbow trout in Lake Creek?
Slightly reduced lake habitat (fully seeded lake)
Limited value habitat for spawning and rearing in this reach
PME - none
Rev. 0

7. Project Effects Gravel and large wood
Lake not a significant source of wood or gravel (none) to Lake Creek
Decreased flows affected recruitment
PME – (same as flow slide) Cause a bankfull flow to occur down Lake Creek at least every two years for the purposes of moving/recruiting wood and gravel
Rev. 0

8. Wood At Boom 0507 (R) and 0804 (L)
Rev. 0

9. Wood at Log Boom – May 2007
Rev. 0

10. Project Effects Tributary stream connectivity to lake
Not affected provided lake high June – July during trout spawning / emergence
PME – keep lake at or above during the months of June and July
Rev. 0

11. Project Effects Shoreline Erosion
Indistinguishable from natural erosion
Affects cultural site
PME – Historic Properties Management Plan
Monitor erosion at 45LE285
Implement erosion control measures as appropriate (e.g., breakwater to reduce waves, bank-protection, control of swimming and other bank trampling effects in area, etc.)
Rev. 0

12. Project Effects Intake screen impingement
Minimal take (x%) compared to overall Lake population
Some evidence of mortalities associated with spawning
Additional evaluations underway
PME – (not enough information for PME)
Evaluate entrainment / impingement effects of different screen configurations (particularly the hanging screens)
Additional study in 2008 of association between spawn timing and screen impingement occurrences.
Optimize screen configuration if necessary.
Rev. 0

13. Project Effects Water Quality PME - none
Water chemistry typical (oligotrophic mountain lake)
Substantial cooling of creek by groundwater
No significant cooling or heating of powerhouse water
No net effect on Cowlitz temperature
Lake Creek is substantially cooled by groundwater
Tailrace does not benefit from groundwater cooling (same as lake surface temperature)
PME - none
Rev. 0

14. Project Effects Roads PME
Minimal project use vs. public use of road 1260 (most months less than 1% except spring when relative use is up)
Exclusive summer use of road and connecting trail #74 Pipeline Bench road and trail by project personnel
Necessary winter use of road 1262 (Latch Road)
PME
Project will continue to maintain and Trail #74 (Pipeline Bench road and trail – maintenance level 2)
50% (100%???) maintenance of road 1262 from gate to end (maintenance level 2)
No maintenance of road 1260 due to low ratio of project to public use
Rev. 0

15. Project Effects Recreation use has been declining PME - none
Recreation pre-dates the project
Independent of project (no recreation opportunities have been eliminated/replaced by project)
Future is dependent on FS management decisions:
To take enforcement actions for campsites based on current regulations and to maintain wilderness character
To eliminate OHV use of pipeline road/trail
Affirmative decisions in both areas will substantially diminish use and potentially eliminate current sanitation needs
PME - none
Rev. 0

16. Project Effects Fish Passage due to project facilities
No issues with project pipeline crossings or Hall Creek flume
Lake Creek natural anadromous barriers (RM 1.03 and 1.95) identified
Snyder Creek tailrace culvert needs routine maintenance
PME - Snyder Creek culvert
Complete review of culvert for adequate passage
Perform routine maintenance on existing culvert
Replace crossing or reroute Snyder Creek if existing culvert does not meet standards
Rev. 0

17. Project Effects Tailrace slough PME
Project outages may affect anadromous fish by interrupting flow causing stranding or desiccation of fish and redds
Project cannot compensate for Cowlitz channel shifts and changes in flow (nearest redds over 1000 (VERIFY) feet away from project discharge
PME
Outage moved to August-September time period to reduce attraction flow for spring Chinook
Supplemental Lake Creek flows to enhance spring Chinook spawning in August and September
Rev. 0

18. Project Effects
Project tailrace canal and powerhouse stilling basin may cause spawning delay of anadromous fish species or stranding and desiccation during project shutdowns
PME –
Perform fish rescue and seining during shutdowns until screens are operational
Install a fish barrier (drum screen) across the tailrace canal near its confluence with the Cowlitz (construction scheduled for 2007 or 2008)
Monitor the effectiveness of the screens by seining
Rev. 0

19. Lake Level Revisions
Lake level rule curve revision to provide authorization to spill water during the spring runoff and to supplement water flow to Lake Creek
Maximum Pool Elevation – None (ok to spill)
Previous (top of spillway); eliminates violation for each spill
Minimum Pool Elevation – 2849 (no change)
May 1 to July 31: no max; min
Allows high lake level for spring spill event; maintains tributary connectivity
August 1 to 31: max; min
Same max; Provides an additional foot for supplemental flows
September 1 to 30: max; min
Same max; Provides a second foot for supplemental flows
Annual maintenance outage and recovery – no maximum (ok to spill)
Shutdown will cause high lake levels and spill; recovery time required
October 1 to April 30: no max; 2849 minimum (no change to minimum)
Exceptions – circumstances beyond the control of the licensee (project shutdowns, mechanical failure, equipment limitations, isolated operations, unusual natural inflows, etc.)
Rev. 0

20. Placeholder – Lake Level Figure
Create and insert the proposed lake level rule curve (from previous slide) graphic figure.
Rev. 0

21. Ramping Rates Standard WDF&W ramping rates will apply
Rates will apply to decreasing Packwood Lake and Lake Creek levels
Only apply to project caused effects (i.e., project will make no changes during a zero ramping rate period) since project cannot compensate for natural changes in lake inflow rates or stream accretion amounts
Only the zero rates are significant to lake level due to the project’s limited capacity (about ½ inch/hr max with no inflow)
Lake Creek ramping rates will need to be developed for bypass valve flow changes between about 3 to 40 cfs
Ramping rates for the large tailrace slough study area are not applied due to the ever-changing Cowlitz River channel configuration and highly variable flow regime
Rev. 0

22. Project Effect Noxious Weeds
PME – Develop a management plan or procedure for control
Rev. 0

23. Project Effects Rare Plants PME – Develop management plan if necessary
Rev. 0

24. Project Effects Cultural and Historic property management
PME – Submit a Historic Properties Management Plan
Rev. 0