The Canadian prairies are often envisioned as dry, windswept fields; however, much of southern Manitoba is not arid plain but wet prairie, poorly drained land subject to frequent flooding.

Wet Prairie brings to light the complexities of surface water management in Manitoba, from early artificial drainage efforts to late-twentieth-century attempts at watershed management. Irregular water-flow patterns challenged the checkerboard landscape of the 1872 federal Dominion Lands Act, and homesteaders found their agricultural ambitions at odds with local environmental realities. Thus, in keeping with liberal principles, the provincial government undertook substantial drainage efforts. Flooding and drainage became the subjects of intense and persistent debate among provincial officials, drainage experts, and Manitoba residents. New alliances and rivalries emerged amid shifting social, political, and environmental contexts, with enduring consequences for both the landscapes and people of the wet prairie.

This account of an overlooked aspect of Prairie environmental history traces how the biophysical nature of southern Manitoba helped shape both Manitoba society and the provincial state.