Watershed ReportingHealthy land and water resources ensure safe drinking water and resilient forests, wetlands and wildlife, enabling us to adapt more easily to climate change. Ontario's 36 Conservation Authorities monitor the health of natural resources in Ontario's watersheds because it helps us to better understand the local environmental issues, to focus actions where they are needed the most and track progress over time. |
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What Do Conservation Authorities Monitor? Forest Cover & Forest Interior — Forests provide habitat and shade; they help to clean our air and water and they protect the soil which promotes water infiltration and reduces both erosion and flooding. Forests also help to cool the land and air – nature’s air conditioner! Conservation Authorities assess the area of their watersheds covered by forest; and the amount of forest “interior” (areas that are more than 100 meters from the forest edge which provides critical habitat for many species including songbirds. Surface Water Quality — Surface water is the water that makes up our rivers, lakes and streams. Conservation Authorities assess the quality of these water bodies by measuring water chemistry (phosphorous, oxygen) and organisms that live in the sediment at the bottom of streams and rivers. Some Conservation Authorities also measure bacteria. Groundwater Quality — Groundwater is the water found beneath the earth’s surface, in water bearing layers known as aquifers. Groundwater is difficult if not impossible to clean once contaminated, so it is critical to protect areas of groundwater recharge. Conservation Authorities monitor water chemistry (nutrients, metals, chloride & nitrates). |
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Illustration from Annual Rideau Valley Watershed Checkup 2006. |
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In their report cards, Conservation Authorities monitor three key environmental conditions that are important indicators of a watershed’s health: Forest Conditions, Surface Water Quality and Groundwater Quality.
To help determine the quality of water in streams, Conservation Authorities collect small organisms (Benthic Invertebrates) from the streams’ sediment. These small bugs act as barometers of water quality. Some can tolerate pollution while others disappear as pollution increases.