Figure 7: Discharge into Laguna Grande, September 5, 1984 from a small lake known as Laguna Pequeña. Channel is 12 feet wide, discharge nearly 400 ft³/sec. A water sample yielded high levels of Ca, Mg, SO4, Br and F, all due to dissolution from Rustler dolomite and gypsum. (Photo from Phillips, 1987, p. 231)