Living in Town - Kawartha Conservation
Transcription
Living in Town - Kawartha Conservation
Living in Town: How you can help protect Lake Scugog Funding for the production of this booklet generously provided by: TABLE OF CONTENTS A healthy Lake Scugog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Your lawn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Your ditch or shoreline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Your pet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Your car and driveway. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Your rainwater runoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Your yard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Native plant nurseries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 More information and help. . . . . . . . . . . . . . . . . . . . . . . . . . 12 2 DURHAM REGION A HEALTHY LAKE SCUGOG A healthy Lake Scugog and area environment are vital to our local and regional economies. Many people visit or live in the area to enjoy Lake Scugog’s natural beauty and abundant wildlife, and take advantage of the swimming, boating and fishing. In fact, Lake Scugog is one of Ontario’s major fishing destinations. The provincial government estimates that there are up to 225,000 angler hours on the lake each year, a significant number when compared to Lake Simcoe which has 556,000 hours and is ten times the size. This is partly due to our close proximity to large populations in the Greater Toronto Area. Many people have said in a recent survey conducted through the Blue Canoe project that, over the past decade, there have been noticeably more weeds and a decline in water quality. This has been impacting swimming, boating and other recreational activities that contribute to the local and regional economies. As part of the Lake Scugog Environmental Management Plan, Kawartha Conservation has been investigating these issues and found that excessive phosphorous from human sources is contributing to the growth of aquatic plants and impacting water quality. While there are many sources of phosphorous in the Lake Scugog watershed, one of the most significant is from towns and small communities, such as Port Perry, Seagrave, Sonya, Greenbank, Viewlake, Caesarea and Blackstock. These urbanized areas comprise less than 3% of the total watershed lands that drain to the lake, but contribute over 18% of the total phosphorus in Lake Scugog. “Towns and small communities make up only 3% of the area that drains to Lake Scugog, but contribute 18% of the phosphorous that promotes aquatic plant growth in the lake.” Our actions on the land are impacting the lake, and we are all responsible. This guide suggests easy and inexpensive ways to reduce your phosphorous contribution and encourage a healthy environment. This guide has been developed by Kawartha Conservation to help support the Lake Scugog Environmental Management Plan (LSEMP) and its implementation. The LSEMP is supported by the Region of Durham, the City of Kawartha Lakes and the Township of Scugog 3 What happens if there is too much phosphorous? All lakes age naturally, becoming shallower with the build up of sediments and decomposed aquatic plants. This aging process can happen much more quickly when there are high levels of phosphorous from human activities. It’s important that we reduce our impact, so that we can extend the life of Lake Scugog. “Our actions on the land are causing Lake Scugog to age more quickly” This faster aging process is called eutrophication, and there are many consequences: • Increased algae and aquatic plant growth • Reduced dissolved oxygen concentrations in water for fish and other organisms • Stress on fish species and other organisms • Decreased clarity of water • Poor taste and odour of water • More complicated and expensive water treatment processes • More potentially harmful chemicals in our tap water • Reduced recreational opportunities • Faster sedimentation resulting in lower lake level How much phosphorous is in Lake Scugog? Every year, over 9 tonnes of phosphorous enter Lake Scugog, with two-thirds of it remaining in the lake. It takes only 1 tonne of phosphorous to promote the growth of 500 tonnes of aquatic plants, which eventually die and build up on the bottom of the lake to feed new plants. Phosphorous concentrations are very high in the rivers flowing into the lake. Average concentrations are typically two times higher than the Provincial Water Quality Objective of 30 micrograms/litre. Some of the highest levels are found in Cawker’s Creek, the Nonquon River, Blackstock Creek, Layton River and the bay immediately fronting Port Perry. We need to reduce the amount of phosphorous entering Lake Scugog each year by 3.4 tonnes. This will help improve water quality and maintain the lake’s ecosystem. As part of the Lake Scugog Environmental Management Plan, Kawartha Conservation has developed a wide range of strategies that target phosphorous from the various sources. Visit www.kawarthaconservation.com/lsemp for more information. Phosphorous Sources in Lake Scugog Natural Sources 21.4% There are many sources contributing to phosphorous levels in Lake Scugog. Rural Road Runoff 6.4% (roads make up 1.56% of land use) Port Perry Sewage Treatment Plant 1.8% 3 .4 tonnes Septic Systems 9.7% The total amount of phosphorous we need to keep out of Lake Scugog each year 4 Agricultural Runoff 23.5% (agriculture makes up 53% of land use) Atmospheric Deposition 19% Urban Runoff 18.2% (urban areas make up 3.56% of land use) 1 tonne The reduction in phosphorous needed from towns and small communities each year to help improve water quality and maintain the lake’s ecosystem Where does the phosphorous from towns and urban areas come from? In urbanized areas, much of the phosphorous comes from our activities in and around the yard, such as: • Fertilizing the lawn • Washing the car with soap that contains phosphates • Sweeping or blowing leaves and grass clippings onto the road • Pet waste • Erosion Phosphorous from these sources are washed into the stormwater system when it rains, or when there are excessive amounts of water from washing the car, watering the lawn or rinsing the driveway. This runoff goes through a series of pipes or ditches, downhill, and into the nearest water body, such as Lake Scugog or the rivers that drain into the lake. There is often no treatment done to this water. This means everything the water picks up goes right into the lake. It’s not only phosphorous washing into the lake Any substance on the ground can be found in stormwater runoff. This often includes motor oil, gasoline, asphalt and wood treatment residues, car wax and antifreeze. These toxic substances can damage the aquatic ecosystem and harm fish and other wildlife. In addition to these substances, soil and other less toxic sediments can pass through the stormwater system, eventually building up in certain areas of the lake. These sediments decrease water depth for boaters, make the water cloudy, and even carry phosphorous that has attached to the particles. Sediments can be washed into the stormwater system from a pile of sand or sod; grass clippings, leaves and silts that are swept onto the road; construction sites; and street sanding during the winter. 5 YOUR LAWN Use natural lawn care techniques You can have a healthy, natural lawn without a lot of watering or the use of chemical fertilizers that can easily wash into the stormwater system and lake. Here are some simple steps. In the spring… 1. Thatching - Remove dead grass from your lawn. Thatching is a great way to help aerate your lawn and can easily be done using a standard leaf rake. 2. Aeration - Aerating every couple of years is a great way to loosen soil to allow for more water and nutrients to enter the earth. This involves the use of an aerator that removes small plugs of earth from the topsoil layer. 3. Apply compost to your lawn - A thin layer of compost (or a top-dresser containing compost) will contribute to a healthy lawn by nourishing the grass and increasing the organic matter in your soil. 4. Over seeding - Over seeding will help create a thick and lush lawn and will also help choke out weeds. The thicker the grass, the less chance the weeds have to survive. Over seeding can also be done mid to late August. Make sure to use grass species that are suitable to your growing area. Species such as rye and fescue grass are native, drought tolerant species that do not require extra fertilizer and water (labelled endophytic or endophyte-enhanced). Native grass species are more pest-resistant and hardy. Throughout the growing season… 5. Don’t cut it too short! - When mowing your lawn, leave the grass at a length of 6 to 8 cm (2.5 to 3 inches). This will help keep out weeds, as well as shade the grass roots and keep the soil moist. Keeping grass taller encourages a deeper root system and allows a lawn to be more drought resistant. 6. “Grass-cycling”- Leaving grass clippings on your lawn after mowing is a great way to fertilize your lawn, and it’s free! Ensure they do not end up in the stormwater system by keeping them off the driveway, sidewalk and road. Grass clippings are full of nutrients that promote healthy plant growth and increase organic matter levels in soil. Mulching fallen leaves and retaining them on the lawn over the winter helps to prevent erosion and provides a natural fertilizer. 6 ENVIRONMENTALLY FRIENDLY WEED AND PEST CONTROL Pulling weeds This can be labour intensive work, but it will pay off. A vigilant weed puller will notice fewer weeds in their lawn over the years. New and improved tools (available at most hardware stores) can make this job a lot easier. 7. Be wise about watering - A healthy lawn requires only 2.5 cm (1 inch) of water a week. Using a rain gauge can help you determine when it is necessary to water. Each time you water your lawn, be sure to water deeply. This promotes deep root growth, and will prevent the grass from drying out during periods of drought. Try watering before 8 a.m. or at dusk to prevent burning and evaporation. Be sure to keep the sprinkler from watering the driveway, sidewalk and road. Helpful Hint - After watering, use a garden trowel to check how deep the moisture has gone. The ideal is to water 10 to 15 cm (4 to 6 inches) deep. Use corn gluten meal Corn gluten meal is a natural by-product of corn that is wetmilled. When spread on a lawn, it can prevent many common weeds from germinating and establishing in the soil. This natural substance can be purchased at most garden centres. Home made remedies Simple solutions such as pouring boiling water or white vinegar on weeds have proven to be quite effective. Diatomaceous earth This dust contains microscopic, razor-like edges that injure insects, causing mortality. This type of pest control works well on insects such as aphids, earwigs and slugs. Nematodes These naturally occurring, microscopic, predatory worms are an effective way to kill grubs, leatherjackets, and other insects that can cause damage to your lawn. They are available at most garden centres. YOUR DITCH OR SHORELINE Create a natural filter along ditches, streams and shorelines Plants within 3 metres of any ditch, stream or lake can help stabilize soil, while also absorbing excess water, nutrients and sediments. Even uncut grass can act as a natural filter. Here are some tips for helping your natural filter: • Leave an un-mowed area 1 – 3 metres between the edge of the water or ditch and your lawn; allow it to naturalize on its own – you may be pleasantly surprised. • Plant native shrubs, flowers or trees to further help filter run-off and reduce erosion. The plants that grow naturally in this area will generally be more tolerant to extreme changes such as flooding or drought. 7 YOUR PET Scoop the poop When water passes over pet waste, it takes some of that waste with it down the storm drains and often directly into the lake. Pet waste contributes to higher phosphorus, nitrogen and bacteria in the lake. The bacteria in any animal waste can cause large amounts of E. coli to form in water systems. The bacteria levels can get so high that beach closures are enacted. Reducing bacteria levels can be easily accomplished by scooping the poop on a regular basis so it does not have a chance to be carried away with the next rain event. Pet waste should be put into the garbage, a separate container or composter. When composting, for every layer of pet waste, there should be an equal layer of soil, or leaves and twigs, put on top to reduce odours and flies, and to speed decomposition. YOUR CAR AND DRIVEWAY Avoid drips and leaks from your car Be aware of any leaks or drips from your car. Many of the fluids in your car are toxic to the environment. When they leak or drip onto a hard surface like asphalt, they cannot absorb into the ground and are washed away into the stormwater system, and then into the lake. If your vehicle does have a leak or drip, use an absorbent material, towel, or bucket to catch the fluid, and promptly have your mechanic attend to the leak. When your car needs a wash, wash it on the lawn. The soap is absorbed into the soil and your lawn gets watered at the same time. Try using a phosphate free soap to further reduce contamination. Even using a car wash facility is better than using the paved driveway, as car wash businesses generally treat and recycle their water. Dispose of all car fluids properly. Every municipality has a location to properly dispose of toxic materials. Contact your local municipality for further details. If you’re thinking of paving or re-paving your driveway, consider permeable pavers instead. These are driveways that allow water to be absorbed through them. Permeable pavers can be as elaborate as ground fencing or moulded brick, to being as simple as just using gravel. Giving your driveway a permeable surface can save you money and help reduce the amount of runoff contaminants that are washed into the lake. SOME DRIVEWAY TIPS Sweep your driveway instead of rinsing it with water 8 Wash your car on the grass using phosphate free soap YOUR RAINWATER RUNOFF Reduce and collect rainwater runoff Reducing the amount of rainwater runoff from your property can help stop contaminants and sediments from entering the stormwater system and reaching Lake Scugog. During a heavy rainstorm, water can come out of your eavestroughs with a great amount of force. Not only can this water overflow your yard, it can wash soil into the streets, ditches and stormwater systems. Eavestroughing can be a great tool if you can point the outlet pipe to a grassy area where some will infiltrate, or where the water can either be stored or used in a more efficient manor (see below). Rain Barrels With a rain barrel, you can reduce the sediment and over flow on your lawn and provide the best watering source for your garden during drought conditions. Rain barrels come in many different shapes, sizes, colours and options. Rain barrels can be purchased from many different sources such as local hardware stores, farm suppliers, some municipal offices, environmental agencies, and on-line suppliers. Pricing generally ranges from $50 to $350. Cisterns A cistern is a large storage tank that is normally underground or inside the house which is used to collect rain water for home usage. This system has been used for generations in rural communities, and is now being used by urban residents. Cisterns can be expensive to implement but will provide water relief in drought conditions. The cistern is hooked up to your already existing water pipes and can switch back and forth from town supplies. There are different set ups for cistern use. Some pass the water through an ultraviolet filter so it can be used through out the entire house, including for drinking water. Other systems only provide water to toilets, outside taps, and laundry facilities and do not pass through a filter. An experienced professional should be brought in to install a cistern. Rain Gardens A rain garden is a planted depression that allows rainwater runoff from roofs, driveways and other hard surfaces to be absorbed by water loving plants. Native wetland edge species should be used in a rain garden to achieve the best water absorption. 9 YOUR YARD Use more plants and trees in your yard An abundance of plants in your yard has many benefits. They will help stabilise the soil and reduce erosion, increase the filtering capacity of your lawn, and provide habitat for wildlife. Wild Flower Meadows Native wild flowers can be used to create a meadow on your lawn or edging around your property. These plants have a natural tolerance to our climate and provide biodiversity for pollinators of all types. These pollinators can be beneficial in many ways such as pollinating other plants around your home and controlling unwanted insects and bugs that may harm your gardens. Wildflower seeds can be purchased from any gardening store. Sometimes if grass is left to grow, wildflower seeds already present will grow among the grass. Trees If there is enough space on your property, consider planting trees. They will provide shade to your home, lowering cooling costs, and can protecting your house from cold winter winds. Trees can also help absorb excess amounts of water and contaminants through their large root systems. Special care should be taken when choosing a tree for an urban site. Native plants Extend your summer by choosing native species of plants, shrubs and trees. These species are native to Canada for a reason. Native species are better suited to our continually changing climate from cold to hot and hot to cold. These plants are more drought-tolerant (less watering time is needed), more disease resistant (less fertilizer and care are needed), and can survive the freezing temperatures of our winters without much attention. Before purchasing any new plant species, special attention should be given to the plant’s requirements. There is no point in purchasing a plant that will not survive in the area you want to plant it. Save more time and money by making sure the plants you buy are suitable for your planting area. When selecting shrubs or trees on your property, consider how much space the shrub or tree needs to grow. In addition, urban forests are subjected to higher pollution levels and salt than some species can tolerate. Look into proper planting techniques for trees. They cannot be planted the same way as a flower, vegetable or shrub. 10 Native plant nurseries There are many local nurseries that supply a large selection of native plant species. Please note that this is not a complete list and we do not recommend any specific nursery. 4965 Westney Road Pickering (Claremont), ON L1Y 1A2 T: 905.649.8176 www.nativeplants.ca T: 705.374.4700 www.rockwoodforest.com 11 Looking for more information and help? Qualified staff at the following organizations can provide advice and help identify financial incentives and other resources that may be available. You are also welcome to drop by their offices during business hours to access available publications and other information resources. DURHAM REGION Kawartha Conservation 277 Kenrei Rd., Lindsay www.kawarthaconservation.com T: 705.328.2271 Scugog Connections 126 Water Street, Unit 3, Port Perry www.scugogconnections.ca T: 905.985.3279 Region of Durham 605 Rossland Road E, Whitby www.durham.ca T: 905.668.7711 City of Kawartha Lakes 26 Francis Street, Lindsay www.city.kawarthalakes.on.ca T: 705.324.9411 Township of Scugog 181 Perry Street, Port Perry www.township.scugog.on.ca T: 905.985.7346 ONLINE PUBLICATIONS REFERENCES A Homeowner’s Guide to Stormwater Management www.delawareestuary.org/pdf/HomeownersGuideSWMgmnt.pdf Green Eco Services. 2009. 27 tips for conserving water in your yard. [online]. Available from: www.greenecoservices.com/27-tips-for-conserving-water-in-your-yard Accessed May 19 2010. Aquatic Plants in Lake Scugog: What’s causing them and what you can do www.kawarthaconservation.com/pdf/LakeScugogNutrientFactSheet.pdf Hale, G., Ambrose, N., Bogen, A., Spicer-Rawe, K., Uchikura M., and Saunders, E. 2005. A field guide to common riparian plants of Alberta. Cows and Fish Program:Lethbridge:63pp. A Shoreline Owner’s Guide to Lakeland Living www.kawarthaconservation.com/pdf/Lakeland_Living_Guide.pdf Green Lawns, the Green Way www.kawarthaconservation.com/pdf/GreenLawns.pdf Kawartha Conservation. 2009. Lake Scugog Environmental Management Plan. [online]. Available from: www.kawarthaconservation.com/lsemp Accessed May 19 2010. Ministry of Agriculture, Food, and Rural Affairs. 2010. Ontario Weeds. Government of Ontario. [online]. Available from: www.omafra.gov.on.ca/english/crops/facts/ontweeds/weedgal.htm Accessed May 27 2010. Office of Sustainability. 2009. Make my yard environmentally friendly. City of New Haven, Connecticut. [online]. Available from: www.cityofnewhaven.com/Sustainability/Resources/Green_Up_My_Home.asp Accessed May 25 2010. Ontario Invasive Plant Council www.ontarioinvasiveplants.ca Plant wind breaks, save money www.kawarthaconservation.com/pdf/MTO291_Windbreaks_Bro_ EN.pdf The Shoreline Primer www.kawarthaconservation.com/pdf/TheShorePrimer.pdf Philadelphia Water Department. 2006. A homeowner’s guide to stormwater management. Office of Watersheds: Philadelphia: 1. 32pp. Pridham, D. 2009. The landowner’s guide to controlling invasive woodland plants. Kawartha Conservation.Victoria Stewardship Council. Ontario Federation of Anglers and Hunters. 24pp. Shigo. A.L. 2006. Tree basics. Shigo and Trees Associates, LLC: Snohomish:40pp. Toronto and Region Conservation Authority. 2009. Toronto homeowners’ guide to rainfall. Riversides. City of Toronto. [online]. Available from: www.riversides.org/rainguide Accessed May 20 2010. Toronto Homeowners’ Guide to Rainfall www.riversides.org/rainguide Toronto Parks and Recreation. 2004. Urban Forestry Services – Tree Fact Sheet #3. [online]. Available from: www.toronto.ca/trees/pdfs/Fact_3_Controlling_Invasive_Plants.pdf Accessed May 20 2010. Photo Credits Rain barrel (p. 9) - Center for Neighborhood Technology Rain garden (p. 9) - Center for Neighborhood Technology Down Spout (p.9) - Paul Wicks Scoop the poop (p. 9) - Daquella Manera Driveway (p. 9) - Tony Crider University of Florida. 2009. Cisterns to collect non-potable water for domestic use. [online]. Available from: http://edis.ifas.ufl.edu/ae029 Accessed May 20 2010. 12 Printed on 100% post-consumer recycled paper.