Grandin Lagoon Wastewater Treatment Plant, Sibley, North Dakota

Grandin Lagoon is a wastewater treatment facility located near Sibley in Barnes County, North Dakota. It serves a small population of 173 residents, reflecting the rural character of the area. The plant is situated in the northern Great Plains, a region with cold winters and low population density. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater. With a designed capacity of 75.71 million gallons per year and an actual discharge volume of 64.35 million gallons per year, the facility operates below its capacity. The treatment process likely involves lagoon-based systems, common in small communities for their low energy and maintenance requirements. The treated effluent is discharged into local waterways that drain into the Sheyenne River, a tributary of the Red River of the North. The Red River flows north into Lake Winnipeg in Canada. The plant's discharge supports the aquatic ecosystem of the Sheyenne River, which provides habitat for fish and wildlife in the region.

The plant discharges into the Sheyenne River basin, which flows into the Red River of the North and ultimately reaches Lake Winnipeg. The watershed supports diverse aquatic life, including fish species such as walleye and northern pike. The region's flat terrain and agricultural land use mean that nutrient management is important to prevent eutrophication in downstream waters.