he waters along Baja's Pacific coast are similar to
those of Alta (our) California, being characterized by ocean swells, heavy surge,
and upwellings of nutrient-laden deep water. Because of the vast size of the
Pacific, distant weather patterns can produce heavy surf for weeks at a time. The
southerly sweep of the California Current keeps water temperatures lower than
would otherwise be expected, normally ranging between 50 and 75 degrees,
gradually warming as the water moves south.
o many scientists, the Cortez is one
of the most interesting bodies of water on earth. Over 600 miles long, having an
area of almost 60,000 square miles, and with deep basins in its central and
southern portions, one more than 14,000 feet in depth. The largest tidal range in the world, up to 31 feet, occurs
at its north end, and low tides uncover mud flats up to 3 miles wide. Tidal
currents form huge whirlpools and rips in the "Midriff" region of the central
Cortez, and velocities of over 6 knots have been recorded. Large swells do not
build up as they do in the ocean and there is little horizontal surge. Variations
in water temperature also are extreme, inshore surface waters reaching 91 degrees
in the south during summer and 47 degrees in the north during winter.
he Chamber of Commerce of Mulegé would have you believe that a river courses
through the town, but the "Río Mulegé" is actually a brackish arm of the Cortez,
although it does receive small amounts of fresh water from springs above a dam.
Other than these, Baja has no rivers, and there are only about six small streams
that reach salt water on a more or less permanent basis.
here are only two sizable lakes in Baja. Laguna Salada, in the lowlands south
of Mexicali, receives widely varying amounts of water from the Río Colorado from
year to year; in 1987, the lake was 60 miles long, but in recent years, the
drought prevalent in the Southwest has reduced it to perhaps 20. Laguna Hanson,
in the Sierra de Juárez, is less than a mile across and is shallow and muddy.
There are a number of ponds so small that they are not even graced with names.
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