 The drainage of raw sewage into Kingman Lake and the Anacostia River first became an issue in the early 1930s.An open sewer channel drained into Kingman Lake through the middle of this tract, but a footbridge was constructed over it to link the two areas.Later that year, the Army Corps of Engineers spent $853,000 to extend Washington's sewer system to Bladensburg to collect raw sewage being dumped into the Anacostia River and Kingman Lake.