The giant Weyburn Field in SE Saskatchewan has over 40 years of development drilling in the pool, which has led to its extension downdip along southwest- plunging structural noses. The objective of this study is to map the regional hydrodynamics of the Midale Formation in order to determine theoretical potential for tilted oil/ water contacts (both directional and magnitude), observed from oil/water contacts on features appearing structurally lower than the main portion of the pool. The currently mapped structural and stratigraphic configuration of the Weyburn-Elswick area does not explain the distribution of oil entrapment in the pool, possibly indicating that hydrodynamics play a key role.