Figure 1.

The Almendares River watershed near Havana, Cuba. Sampling stations are as indicated as well as general descriptions of land use within the watershed. The watershed includes a solid waste landfill, high-density urban development, urban agriculture, domestic waste discharges, and numerous pharmaceutical and other factories. The upper reaches are primarily urban agricultural, parkland, and low-density dwellings, whereas population densities and industrial intensity increase downstream, especially below station 6.