Following Water Movement Using Dye Tracing (U.S. National Park

Use of Dye Tracing to Determine Ground-Water Movement to Mammoth Crystal Springs, Sylvan Pass Area, Yellowstone National Park, Wyoming

Water, Free Full-Text

Why are Toronto ponds green?

Study explains mystery of Devil's Kettle - Duluth News Tribune

Extremophiles of the Madison Aquifer (U.S. National Park Service)

Judge C. R. Magney State Park - Wikipedia

Water Quantity - Protecting Water (U.S. National Park Service)

Green creek in Clinton Twp. was not toxic — or St. Patrick's Day related – Macomb Daily

Why Green Slime Was Spotted Oozing from New York City Sewers

USGS Dye-Tracing Study on the Kansas River to Aid in Protecting Water Supplies

HESS - Dye-tracer-aided investigation of xylem water transport velocity distributions

USGS hydrologic study to use non-toxic green dye in Lake Fork Creek

Where does Roaring River water come from?, Local News