Detention Pond Wall Joints?

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I am designing a retaining wall/dam for a detention pond. I've got everything covered except movement joints. I usually approximately follow CRSI's recommendations for contraction & expansion joints in retaining walls. None of my wall sections are over 50' long so I wasn't planning on providing any expansion joints. Although, on a 50' long section of wall I would normally place a contraction joint at midlength. However this wall is a detention pond wall and must hold water. Is it common to provide contraction joints where horizontal stem reinforcement is cut with a waterstop at mid-depth to hold the water??