This very interesting and unique map shows the extent of Washington’s sewer as well as watershed boundaries for both storm water and sewage. The map also provides great deal of topographical detail including rivers, marshes etc., as well as land ownership, named roads and railroads. The flood of 1889 is well detailed.
1890 Hoen Map of Washington Sewage System
Map of the City of Washington Showing Present Main Sewerage and Sewage Outfalls also The territory flooded in June 1889
Map Maker Specifics
Hoen & Co, 1890, Baltimore
29 x 27.3 in. plus margins
Excellent. Clean and sharp image. Well colored. Vitually no sign of toning. A very small marginal separation. Folding map.