1. If the CRT requires 14.1-million-acre ft. of storage and BC Hydro has released over this amount since May 1, why is BC Hydro continuing to outflow more than the 5000 cubic ft per second as documented within the current treaty? Thank you.
Answer from BC Hydro: Under the terms of the Columbia River Treaty, BC Hydro is required to continue sending water to the U.S. during periods of dry conditions. BC Hydro did not send any more water than what is absolutely required to meet Treaty obligations, and this was managed and reviewed daily as part of water flow forecasts and operations planning.
Although the lowest possible release of water rate is 5,000 cubic feet per second (ft
3/s), this does not mean this is all that BC Hydro is required to release. Discharges at 5,000 ft
3/s would only be expected when the Treaty requires that more water is held in Canadian storage. A recent example is the week of February 10, 2024, when discharges from Arrow Lakes Reservoir were reduced to 5,000 ft
3/s due to the atmospheric river event in the U.S., which resulted in significant inflows for the U.S. portion of the basin.
The 15 million-acre-feet of storage does not equate to discharges from the dams as the inflows to the reservoirs far exceeds the storage. The storage just provides some shaping of the flow releases. The annual average inflows into Kinbasket, Revelstoke, and Arrow are approximately 30 million-acre-feet.
2. Why is Hydro allowed to negotiate side deals?
Answer from BC Hydro: The Treaty Entities—BC Hydro, Bonneville Power Administration (BPA) and the U.S. Army Corps of Engineers (USACE)—periodically negotiate and sign supplemental operating agreements when there is mutual benefit to modify the water releases specified by the Columbia River Treaty. These supplemental operating agreements remain compliant within the Treaty. The ability to enter into these agreements is enabled by Columbia River Treaty.
[caption id="attachment_10167" align="alignright" width="300"]
Photo: McDonald Creek Provincial Park, September 2023, as seen in the Castlegar News[/caption]
3. Why was the drawdown so big this summer?
Answer from BC Hydro: The low levels observed in 2023 were due to a combination of below average snowpack during the winter of 2022/23, the early depletion or melt of the below average snow levels in May, and the following severe drought conditions observed in the Columbia basin. The combination of low inflows into the reservoir and required Columbia River Treaty discharges resulted in an exceptional deeper draft (lowering) of Arrow Lakes Reservoir over the summer and fall. Additionally, water releases from Kinbasket Reservoir that might otherwise keep Arrow Lakes Reservoir levels higher were managed, similar to prior low inflow years, to ensure sufficient water storage for winter energy supply for Revelstoke and Mica Generation Stations.
While last year’s Arrow Lakes Reservoir levels and drawdown caused a number of significant challenges, it’s important to note that the reservoir did operate as expected under the terms of the Columbia River Treaty and severe drought conditions. Should similar conditions occur in the future under the current Treaty, similar operations would be expected.
4. Am I correct in believing that any question involving BC Hydro, such as beach cleanup, boat launches, a bridge etc. are not going to be answered?
Answer from BC Hydro:
Reservoir clean up: In the fall/winter of 2023, BC Hydro undertook an inventory of the structures and materials that exist along the shores of Arrow Lakes Reservoir. This includes old building foundations, rusted metal, broken glass, and recent garbage. These structures and materials have now been assessed based on environmental considerations, archeological and heritage values, accessibility, and public safety concerns.
BC Hydro commenced work to start to remove some of these structures and materials in February of 2024. Work will take place over a four-week period, and efforts will be concentrated in high use areas that are easily accessible. Please note that in some areas, work can only be done by hand and without any excavation due to environmental considerations. Following this initial clean-up, BC Hydro will evaluate the remaining structures and materials for potential removal.
Boat launches: As part of BC Hydro’s water licence, they are required to provide access to Arrow Lakes Reservoir during the peak recreation season. To meet this requirement, BC Hydro completed construction and upgrades of boat ramps for use during the recreation period, which is generally considered to be from mid-June to mid-September. The Comptroller of Water Rights has confirmed that, subject to meeting maintenance requirements, BC Hydro has met their obligation to provide access to the reservoir.
Answer from the B.C. Columbia River Treaty Team:
Fauquier-Needles Bridge: The decision about building a bridge between Fauquier and Needles is the responsibility of the Ministry of Transportation and Infrastructure. The Ministry assessed the feasibility of building a bridge and decided not to pursue that option. This issue has been raised before, during the Province’s public engagement on the Columbia River Treaty, and residents have been divided on this issue. Some want a bridge and others do not, in order to prevent increased traffic through and to communities along Arrow Lakes. It’s important to note that the idea of a Fauquier-Needles bridge is not part of the Columbia River Treaty, or a condition of it. Those interested in pursuing this further can contact the Ministry of Transportation and Infrastructure.
Other questions: Any additional questions for BC Hydro can be directed to
southern-interior.info@bchydro.com.
5. Please focus a bit on this years' [2023] extreme drawdown reasons, thank-you.
Answer from BC Hydro: The low levels observed in 2023 were due to a combination of below average snow during the winter of 2022/23, the early depletion of the below average snowpack in May, and the following severe drought conditions observed in the Columbia basin. The combination of low inflows and required Columbia River Treaty discharges resulted in an exceptional deeper draft (lowering) of Arrow Lakes Reservoir over the summer and fall. Additionally, discharges from Kinbasket Reservoir that might otherwise keep Arrow Lakes Reservoir levels higher, were managed, similar to prior low inflow years, to ensure sufficient water storage for winter energy supply for Revelstoke and Mica Generation Stations.
6. I have a hard time believing that the levels have been this low ever at this time of year. In January, February and March yes, but not now....
Answer from BC Hydro: That is correct. Last year’s seasonal levels and rate of decline in August, September, and October have not been observed since the mid 1970s.
7. During the summer the Columbia River was higher than usual. Looking at water levels now the Grand Coulee is at 85% full, Arrow is Low, Duncan is down 1/3, and Kinbasket is near full. It appears that Arrow was drained to save water at Duncan and Kinbasket. Could there not have been a better sharing of water levels?
Answer from BC Hydro: All of the Columbia River Treaty basins operated below average in 2023. This includes Kinbasket, Arrow, and Duncan. Starting in August of 2023, BC Hydro increased flows from Duncan Reservoir in order to reduce flows from Arrow Lakes Reservoir. Water was also held in Kinbasket to meet the demand for power across the province during the winter months.
8. Why are Lake Roosevelt levels so high when Arrow Lakes Reservoir levels are so low?
Answer from BC Hydro: BC Hydro is obligated to release flows under the terms of the Columbia River Treaty. There is no provision for Canada to reduce flows under drought conditions, and they do not have the authority to hold back flows without agreement from their U.S. counterparts.
Once water flows across the border, the U.S. can manage it as they see fit. This includes energy purposes, fisheries, navigation, and many other downstream uses. The water that was held in Lake Roosevelt was used to meet U.S. domestic needs.
BC Hydro and the U.S. have, on occasion, found common ground to help meet objectives on both sides. For example, in May of 2023, flows from Arrow Lakes Reservoir were reduced because of mutual benefits with the U.S. to reduce peak flows in the U.S. and to support higher Arrow Lakes Reservoir levels in the spring. This agreement resulted in Arrow Lakes Reservoir levels being up to 8 feet higher than they would have otherwise been between May and August. The water was released by mid-August as per the agreement with the U.S. to meet U.S. fisheries objectives.
9. What is the minimum lake level for full power production at the Arrow Dam?
Answer from BC Hydro: Arrow Lakes Generating Station requires a minimum operating level between approximately 425.8 metres (1,397 feet) to 427.3 metres (1,402 feet). Arrow Lakes Generating Station contributes less than 1% of the total BC Hydro generation in an average year, and this generation is not a factor in the current reservoir levels.
10. What is the minimum level for the Arrow Lake (i.e. discharge rates would be reduced)?
Answer from BC Hydro: The normal licensed range for Arrow Lakes Reservoir is between 440.1 metres (1,444 feet) and 419.9 metres (1,377.9 feet). The reservoir can be operated up to two feet above its normal maximum level (to 440.7 metres or 1,446 feet) if approved by the Comptroller of Water Rights. Arrow Lakes Reservoir provides 7.1 million-acre-feet (MAF) of Treaty storage.
11. Is it correct to say you kept the water storage in Kinbasket for winter but released more water from Arrow Lakes to respect treaty requirements?
Answer from BC Hydro: Yes, water was being held in Kinbasket to ensure sufficient water storage to meet the demand for power across the province during the winter months. Additionally, because inflows were also below average into Kinbasket, there was also less water to release from Kinbasket.
12. Am I missing something? I thought we were concerned about water levels and what the committee is doing to correct the existing problem. The Arrow is located in Canada not Portland, Oregon. All the lakes and dams around us are full, so why can't you adjust levels between them? Give us a straight answer.
Answer from BC Hydro: All of the Columbia River Treaty reservoirs operated below average in 2023. This includes Kinbasket, Arrow, and Duncan. Starting in August of 2023, BC Hydro increased flows from Duncan Reservoir in order to reduce flows from Arrow Lakes Reservoir. Water was held in Kinbasket Reservoir to meet the demand for power across the province during the winter months.
13. Why is Mercer Celgar penalized, fined, when they over-generate electricity by BC Hydro??? We could be getting MORE!
Answer from BC Hydro: As part of Government Phase 1 Comprehensive Review of BC Hydro, released in 2019, Government and BC Hydro worked together to develop a renewable organic material (biomass) energy strategy. This strategy included a Biomass Energy Program to address the expiry of the electricity purchase agreements for certain biomass facilities whose agreements were set to expire prior to 2022. Under the program, BC Hydro acquires energy from these eligible facilities through a combination of reduced power use (which is only available to BC Hydro customer generating facilities and which provides an incentive to these customers to offset part or all of their load) and energy purchases. The program includes a standard form of contract and set pricing.
Mercer Celgar’s biomass facility was one of the projects whose agreement was due to expire, and they executed a Biomass Energy Program electricity purchase agreement in 2020. As they are not a BC Hydro customer, and are connected to the FortisBC grid, their electricity purchase agreement only provides for energy purchases by BC Hydro.
Under the Mercer Celgar electricity purchase agreement, BC Hydro pays for electricity delivered to BC Hydro in accordance with the terms of that agreement. Consistent with the parameters of the Biomass Energy Program, there are penalties if Mercer Celgar fails to deliver electricity under certain circumstances, but there are no penalties for over-generating.
14. What was the natural average fluctuation of Arrow before the dam?
Answer from the B.C. Columbia River Treaty Team: Based on data from the Water Survey of Canada gauges that were operating prior to the construction of the Hugh L. Keenleyside Dam in 1968, the natural fluctuation of the Arrow Lakes ranged from approximately 1,377 feet (420 metres) up to early summer peaks between 1,393 feet (424.5 metres) and 1,409 feet (429.5 metres), for a fluctuation of up to 32 feet. This is illustrated in Figure 1.
[caption id="attachment_10172" align="alignnone" width="555"]
Figure 1: Pre and post-regulation hydrograph of the Arrow Lakes. Reference:
Arrow Lakes Reservoir Mid-Elevation Scenarios: Scoping Evaluation, March 2018[/caption]
15. Is the Arrow suffering due to the Peace taking its time to fill the Site C Reservoir?
Answer from BC Hydro: No, Site C Reservoir construction and fill is not related to the Arrow Lakes Reservoir levels observed in 2023. Last year’s low levels were due to a combination of below average snow during the winter of 2022/23, the early depletion of the below average level of snow in May, and the following severe drought conditions observed in the Columbia basin during the summer and fall. The combination of low inflows and amount of water we must release to the U.S. under the Columbia River Treaty resulted in a larger amount of water being released from Arrow Reservoir over the summer and fall of 2023. Additionally, water in Kinbasket Reservoir that might otherwise keep Arrow higher, was managed similar to prior low water years, to ensure sufficient water storage for winter energy supply for Revelstoke and Mica Generation Stations.
16. Why are watersheds not a part of Hydro’s infrastructure?
Answer from BC Hydro: BC Hydro’s water licences only extend to the storage of water in its reservoirs, not to the watersheds as a whole.
17. Is BC Hydro a Crown entity? Does the Ministry of Forests, Lands, Natural Resource Operations and Rural Development have any say in its management?
Answer from BC Hydro: BC Hydro is a provincial Crown corporation, owned by the government of British Columbia. BC Hydro reports directly to the Minister of Energy, Mines, and Low Carbon Innovation.
18. With the extreme water discharge this year since June 23rd, no real answer has been given as to why it was released so quickly and without any warning to residents, other than the weekly report. This has caused extreme hardship to properties. Transparency is required to prepare for this loss of water (at lakefront homes and properties) What is being done to ensure that we have available water for our homes in the future? We have a 1.5 km distance to the lakeshore.
Answer from BC Hydro: BC Hydro provides information on their operations in the Columbia basin in a number of ways, including:
- weekly operations updates that are sent via email,
- a toll-free information line that provides up-to-date reservoir level and river flow information,
- biannual operations summaries that are published every spring and fall,
- near real-time reservoir level information on bchydro.com,
- annual operations update meetings that are held every spring, and
- responding to requests for information via phone, email, and in-person.
In addition to the regular information BC Hydro provides about their Columbia basin operations, they also enhance their regular communications during periods of unusual operations, such as during the drought conditions observed in 2023. Last summer BC Hydro issued two supplementary advisories explaining the low Arrow Lakes Reservoir levels and advising on the forecast. The second advisory was accompanied by a background document that provided an overview on Arrow Lakes Reservoir operations, the Columbia River Treaty, and the Columbia basin. They also hosted virtual public meetings for local elected officials as well as a public virtual meeting. They have also responded to a high volume of questions and concerns via phone calls, emails, and in-person conversations.
19. There wasn’t really any clear explanation as to how there were lower levels above Mica and that the outflows from Mica were the major contributing factor to the Arrow’s rapid and low drawdown. A comparison of the differences this year as compared to previous low water years would have made it lot easier to explain the reason why we are where we are this year.
Answer from BC Hydro: At the end of October 2023, Kinbasket Reservoir was approximately 7.5 metres (25 feet) higher than it was at the same time in 2001, a comparable dry year for the Canadian basin. In 2001, the water was released from Kinbasket to support Arrow Lakes Reservoir levels. In 2023, however, the water was held in storage to ensure that we could meet winter generation requirements due to province-wide drought conditions.
Mica Dam, which creates Kinbasket Reservoir, and Revelstoke Dam, which creates Revelstoke Reservoir, provide over 27% of BC Hydro’s integrated energy. These dams are managed to provide sufficient energy generation across the winter. While Arrow Lakes Reservoir does not have a BC Hydro generation station, the Arrow Lakes Generating Station, owned by Columbia Power, provides less than 1% of BC Hydro’s total generation.
20. However, when most other lakes in the region are still full or near full and the Arrow Lakes are empty, the main reason for the low water level is not drought.
Answer from BC Hydro: Most natural lakes and BC Hydro reservoirs were also below average during the summer of 2023. This was not unexpected given the province-wide drought conditions. The below normal seasonal levels were expected following a lower level of snowpack in the spring, and subsequent below average precipitation observed in many basins. All of the Columbia River Treaty reservoirs operated below average in 2023. This includes Kinbasket, Arrow, and Duncan.
21. BC Hydro's presentation confirmed the level was about maximizing profits. Does BC Hydro not have agreements to buy power from other sources?
Answer from BC Hydro: Arrow Lakes Reservoir levels observed in 2023 were a result of the regional and provincial drought, compliance with the Columbia River Treaty, and upstream operations at Kinbasket for winter energy reliability. Arrow Lakes Reservoir levels were not an outcome of maximizing profits. BC Hydro operates its integrated system under required licence and Treaty obligations, including Water Use Plan objectives, in consideration of providing reliable energy and minimizing costs to our ratepayers.
For further clarification, the Arrow Lakes Reservoir levels in 2023 were in no way driven by profit. Arrow Lakes Reservoir was managed to keep levels as high as possible and to ensure that Kinbasket Reservoir, upstream, has sufficient water storage for the winter to ensure BC Hydro could meet load requirements across the winter. BC Hydro has not been exporting power at the expense of Arrow Lakes Reservoir elevations. There have been net imports into the BC Hydro system starting in January 2023 due to the ongoing drought.
BC Hydro does have about 130 Electricity Purchase Agreements with independent power producers and the energy from these agreements is included in BC Hydro’s plans for the winter.
22. If BC Hydro is so concerned about having enough power, why are BC Hydro and the BC government pushing so hard for everyone to switch to electric heat and electric vehicles?
Answer from BC Hydro: The growing transition to clean energy is a key pathway to achieving BC Hydro’s CleanBC emission reduction targets – and there is significant interest from the residential, commercial, transportation and industrial sectors in making the switch from using fossil fuels to clean electricity. As a result, electricity demand is forecast to increase by 15% or more by 2030.
To meet the growing demand, BC Hydro is adding Site C next year, which will add 8% to the current supply and provide enough clean electricity to power half a million homes or 1.7 million electric vehicles per year.
Government and BC Hydro have also partnered to launch a competitive call for power this spring to acquire 3,000 gigawatt hours per year of clean and renewable electricity, like wind and solar – the equivalent of powering 270,000 homes or adding 5% per cent our current supply. New projects will begin generation as early as 2028, and the call for power is expected to be the first in a series of calls in the coming years.
Additional actions BC Hydro is taking to meet the growing demand include accelerating or extending the timing of several of the existing near-term actions, including actions on energy efficiency, demand response, industrial load curtailment, electricity purchase agreement renewals, and utility-scale batteries.
BC Hydro is also now embarking on the next significant step forward – the release of their 10-Year Capital Plan containing $36 billion in community and regional infrastructure investments across the B.C. This new plan represents an increase of about 50 per cent in investments over the previous capital plans and reflects the province’s growing demand for electricity over time from residential, commercial, transportation and industrial sectors. The plan proposes spending approximately $9.4 billion on electrification and greenhouse gas reduction, $5.3 billion to address load growth and increased customer connections, and $21 billion to sustain existing capital assets, dam safety and reliability.
23. Is there a separate (non-treaty) agreement with the U.S. to provide additional water beyond the treaty requirements?
Answer from BC Hydro: BC Hydro’s operations in the Columbia Basin are governed by the terms of the Columbia River Treaty. The Columbia River Treaty requires Canada to hold back water during wet years and release more water during dry years. BC Hydro is legally required to release this water to the U.S., no more or less, except by agreement with the U.S.
Mica Dam has 12 million acre-feet (MAF) of live reservoir storage of which only 7 MAF is coordinated under the Columbia River Treaty. The Non-Treaty Storage Agreement (NTSA) coordinates the use of 5 MAF of storage with Bonneville Power Administration (BPA). The NTSA is implemented by altering the release and storage of water from Arrow by mutual agreement. This allows the parties to increase or decrease discharges across the U.S./Canada border in addition to those required by the Columbia River Treaty.
The NTSA provides BC Hydro more control over reservoir levels. Since the agreement was signed, BC Hydro and BPA have made good use of NTSA flexibility to reduce high and low water impacts downstream of Arrow Lakes Reservoir and to improve power and non-power benefits for both countries.
The severe drought conditions observed in 2023, combined with Columbia River Treaty requirements, resulted in very low levels on Arrow Lakes Reservoir during the second half of the summer and into the fall. In order to minimize impacts to Arrow Lakes Reservoir levels, BC Hydro utilized storage under NTSA in May during the peak of spring run-off to reduce Treaty releases from Arrow Lakes Reservoir to support higher Arrow levels. This operation resulted in the reservoir being up to 2.4 metres (8 feet) higher from May through August. The water was released by mid-August as per the agreement with the U.S. to meet U.S. fisheries objectives.