Site #12: Slough and Marsh Land
As you travel through the rolling hills of the Riverlands, you will notice frequent “potholes” or sloughs dotting the landscape. These are not just decorative features; they are the lifeblood of the prairie ecosystem. This site provides an ideal vantage point to observe the complex interaction between water, land, and the hundreds of species that depend on these wetlands for survival.
The Anatomy of a Slough
A typical Aspen Parkland slough is a sophisticated natural filtration system. According to the Ducks Unlimited Canada wetland classification guide, these basins are characterized by distinct concentric zones of vegetation. It begins with a “wet meadow” perimeter—often lush with sedges and grasses—that transitions into a “shallow marsh” zone of cattails and bulrushes, eventually leading to deep open water in the center. These zones act as a sponge, soaking up spring snowmelt and heavy rains, which recharges the local groundwater.
A Waterfowl Haven
The Riverlands sits directly beneath the Central Flyway, one of the major migratory routes in North America. At this specific location, it is possible to sight more than 15 species of waterfowl throughout the year. As documented in Saskatchewan Environment’s biodiversity reports, these sloughs are critical nesting grounds for Mallards, Blue-winged Teal, and Canvasbacks. Beyond ducks, the marshes support a noisy chorus of Red-winged Blackbirds, American Bitterns, and various shorebirds.
The Agricultural Balance
Historically, these wetlands were often seen as obstacles by early homesteaders. As noted in Bridging the Years: Era of Blaine Lake and District 1790-1980, “pothole farming” required settlers to navigate their machinery around dozens of small sloughs per quarter-section. However, the Saskatchewan Soil Survey (Report No. 12) highlights that these wetlands help maintain local humidity and soil moisture levels, acting as a natural buffer against the droughts that periodically sweep across the plains.