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The man-made features of a landscape constructed from concrete, masonry, wood, or other non-plant materials. This may include streets, sidewalks, patios, decks, etc.

Household Hazardous Materials

Common everyday products that people use in and around their homes - including paint, paint thinner, herbicides, and pesticides - that can be hazardous if not properly disposed.


A graphical representation of water flow rate as a function of time. Hydrographs are used to describe water flow in streams, rivers, pipes, or other means of conveyance.

Hydrology/Hydrologic Cycle

The science of hydrologic cycle is addressing the properties, distribution, and circulation of water across the landscape, through the ground, and into the atmosphere.