Wabamun Lake Report 2019 Updated October 21, 2020 ALBERTA LAKE MANAGEMENT SOCIETY’S LAKEWATCH PROGRAM LakeWatch has several important objectives, one of which is to collect and interpret water quality data from Alberta’s Lakes. Equally important is educating lake users about aquatic environments, encouraging public involvement in lake management, and facilitating cooperation and partnerships between government, industry, the scientific community and lake users. LakeWatch reports are designed to summarize basic lake data in understandable terms for the widest audience, and are not meant to be a complete synopsis of information about specific lakes. Additional information is available for many lakes that have been included in LakeWatch, and readers requiring more information are encouraged to seek those sources. ALMS would like to thank all who express interest in Alberta’s aquatic environments, and particularly those who have participated in the LakeWatch program. These leaders in stewardship give us hope that our water resources will not be the limiting factor in the health of our environment. If you require data from this report, please contact ALMS for the raw data files. ACKNOWLEDGEMENTS The LakeWatch program is made possible through the dedication of its volunteers. At Wabamun Lake, we would like to thank Stan Franklin and Neil Fleming for their dedication to LakeWatch. We would also like to thank Sarah Davis Cornet, Caleb Sinn, and Pat Heney, who were summer technicians in 2019. Executive Director Bradley Peter and Program Coordinator Caitlin Mader were instrumental in planning and organizing the field program. This report was prepared by Pat Heney, Bradley Peter, and Caleb Sinn. WABAMUN LAKE Wabamun Lake is a well-known, large lake situated 60km west of Edmonton in the North Saskatchewan watershed. The lake’s watershed is approximately 351 km2, and the lake itself has a surface area of 79 km2, a mean depth of 5.1 m, with the deepest area being approximately 11 m deep. 1 Wabamun is Cree for “mirror,” and has been the historical name of the lake, but was also called White Whale Lake for most of the 1800s due to the size of large Whitefish harvested from the lake at that time.2 The Paul Band reserve is situated on the Eastern edge of the lake, and many other communities line Wabamun’s shore. Of them, the Village of Wabamun was Wabamun Lake Watershed. Base data provided by the Government of Alberta established in 1912, and the under the Alberta Open Data License (2020). summer villages of Lakeview and Kapasiwin were some of the first summer villages to be established in Alberta. Other communities across the lake include Fallis, Seba Beach, Betula Beach, and Point Allison, to name just a few. Wabamun Lake Provincial Park is located in the northeast part of the lake, and protects much of the shoreline of Moonlight Bay. There is much industrial activity in the watershed. TransAlta currently operates two coal-fired power plants and one coal mine that impact the Wabamun watershed. The Sundance plant is located near the southeast shore within the watershed, and is the largest coal-fired electrical generation plant in Western Canada.3 While the Keephills plant is located outside of the Wabamun watershed, both Keephills’ and Sundance’s cooling pond drain into the lake after treatment by the Wabamun Water Treatment Plant.4 SunHills Mining, a subsidiary of TransAlta, also operates the Highvale Mine located on the south shore of the lake, and stretches southeast to the North Saskatchewan River. TransAlta also operated the Wabamun Power Plant and Whitewood Mine on the northeast shore from 1962 - 2010.5 1 Aquality Environmental Consulting (2013). Wabamun Lake State of the Watershed Report. Wabamun Watershed Management Council. 2 Mitchell, P. and E. Prepas (1990). Atlas of Alberta Lakes, University of Alberta Press. 3 TransAlta Corporation (2018). Retrieved from https://www.transalta.com/facilities/plants-operation/sundance/ 4 Associated Environmental (2018). Water Quality Status and Trends in Wabamun Lake. 5 TransAlta Corporation (2018). Retrieved from https://www.transalta.com/facilities/mines-operation/whitewood-mine/ A railway runs along the north shore of the lake, and even crosses over the lake at the mouth of Moonlight Bay. On August 3, 2005, a Canadian National (CN) train travelling west towards Vancouver, BC derailed and spilled approximately 400,000 L of Bunker C oil and 88,000 L of toxic pole treating oil, with unknown quantities of each being released into the lake.6 Subsequently, oil was spread across the northern, eastern and southern shores of the lake, severely impacting aquatic and riparian habitat for numerous aquatic species, and waterfowl. Cleanup efforts commenced immediately, and a report released by the Alberta Government in 2007 states that bulrush growth was not impacted by the toxic components of the spilt oil, but rather suffered from the treatments used to clean up the oil.7 Although bulrush growth was not significantly impacted by the spilled materials, toxic compounds were still detectable in sediments in 2007, although they were below environmental guideline limits. The relatively shallow lake attracts many avid fishers to catch Northern Pike, Walleye, Lake Whitefish and Yellow Perch. 8 However, since the spill in 2005, the Alberta Government has mandated a catch-and-release only fishery on the lake.9 Sailing is a popular activity due to the strong winds and northwest orientation of the lake. The lake also attracts many boaters and visitors, due to its relatively good water quality and the scenic aspen parkland that surrounds the lake. Since the lake is one of the most extensively monitored lakes in the province, long-term trend analyses performed by the Alberta Government,10 Associated Environmental and ALMS all confirm that algal and nutrient levels within the lake are stable at moderate levels (mesotrophic), and even Aerial photo of Wabamun Lake (Alberta Atlas of Lakes: slightly decreasing. Cyanobacteria blooms are relatively http://albertalakes.ualberta.ca/). rare, however in 2019 Alberta Health Services issued a cyanobacteria bloom beach advisory at Wabamun for the first time. Alberta Health Services’ cyanobacteria monitoring program is ever-evolving, and has been in existence only since 2010.11 Total dissolved solids (TDS) have been increasing in the lake since the lake was first sampled in 1980, likely due to climate impacts and possibly the return of treated water to the lake from the power plant activities within the watershed.12, 13 The Wabamun Watershed Management Council (WWMC) is an active group that have collectively worked with Alberta Environment and Parks, the North Saskatchewan Watershed Alliance, various consultants, and municipalities on watershed studies, plans, and on-the-ground projects that aim to protect the lake and inform Wabamun Watershed residents. In addition, 2019 was the first year that ALMS collaborated with the WWMC to sample Wabamun as part of its LakeWatch program. The WWMC is expected to release a watershed management plan in 2020. 6 QM Environmental (2020). Retrieved from http://www.qmenv.com/Projects/Wabamun-Lake-Oil-Spill 7 Thormann, M. N. and S. E. Bayley (2008). Impacts of the CN Rail Oil Spill on Softstem Bulrush-Dominated Lacustrine Marshes in Wabamun Lake. Alberta Environment and Parks. 8 Mitchell, P. and E. Prepas (1990). Atlas of Alberta Lakes, University of Alberta Press. 9 Wabamun Watershed Management Council (2019). Retrieved from https://www.wwmc.ca/wabamun-fishery 10 Casey, R. (2011). Water Quality Conditions and Long-Term Trends in Alberta Lakes. Alberta Environment and Parks. 11 Health Protection Branch, Alberta Health (2014). Alberta Cyanobacteria Beach Monitoring, 2010 – 2013. Alberta Health. 12 Associated Environmental (2018). Water Quality Status and Trends in Wabamun Lake. 13 Casey, R. (2003). Wabamun Lake Water Quality, 1982 – 2001. Alberta Environment and Parks. METHODS Profiles: Profile data is generally measured at the deepest spot in the main basin of the lake. At the profile site, temperature, dissolved oxygen, pH, conductivity and redox potential are measured at 0.5 – 1.0 m intervals. Additionally, Secchi depth is measured at the profile site and used to calculate the euphotic zone. For select lakes, metals are collected at the profile site by hand grab from the surface on one visit over the season. Composite samples: At 10-sites across the lake, water is collected from the euphotic zone and combined across sites into one composite sample. This water is collected for analysis of water chemistry, chlorophyll-a, nutrients and microcystin. Quality control (QC) data for total phosphorus was taken as a duplicate true split on one sampling date. ALMS uses the following accredited labs for analysis: Routine water chemistry and nutrients are analyzed by Maxxam Analytics, chlorophyll-a and metals are analyzed by Innotech Alberta, and microcystin is analyzed by the Alberta Centre for Toxicology (ACTF). Invasive Species: : Invasive mussel monitoring involved sampling with a 63 μm plankton net at three sample sites twice through the summer season to determine the presence of juvenile dreissenid mussel veligers. Technicians also harvested potential Eurasian watermilfoil (Myriophyllum spicatum) samples and submitted them for further analysis at the Alberta Plant Health Lab to genetically differentiate whether the sample was the invasive Eurasian watermilfoil or a native watermilfoil. In addition, select lakes were subject to a bioblitz, where a concerted effort to sample the lake’s aquatic plant diversity took place. Data Storage and Analysis: Data is stored in the Water Data System (WDS), a module of the Environmental Management System (EMS) run by Alberta Environment and Parks (AEP). Data goes through a complete validation process by ALMS and AEP. Users should use caution when comparing historical data, as sampling and laboratory techniques have changed over time (e.g. detection limits). For more information on data storage, see AEP Surface Water Quality Data Reports at www.alberta.ca/surface-water-quality-data.aspx.