Show WHAT OF OUR RIVERS enormous loads of sediments and dissolved chemicals importance of water investigations by united states geological survey colorado river di discharges during an average year into tho the gulf of california tons out of mud and silt as suspended matter in addition to this tho the dissolved substances in the miter include tons ot of sodium chloride or common salt tons of glaubert Glau bers salts tons ot of lime tons of gypsum and tons ot of epsom salts in spite oc nc all this dissolved material the colorado at its mouth Is not considered to be a stream ot of unusually high mancra libation liza tion for that region of the country the reason Is that the river also carries so enormous an amount ot of water that tho the dissolved sails constitute a comparatively small proportion of tho the total discharge other streams in tho the country contain dissolved salts in greater concentration tor lor example the elm fork of red river nicer in oklahoma discharges nearly tons of common salt annually although this amount is not so great as aa that discharged by the colorado it is much greater in proportion to the size siz ot of the area drained the discharge of salt from the colorado is c to 20 0 tons annually to each square mile drained by the river but the salt in elm fork of red river is equal to tons per square mile of arm area drained the same river discharges annually tons of magnesium cholo ridel tons of epsom salts tons of gypsum and tons of lime these quantities too are considerably greater than those carried in the colorado in proportion to size of bf the drainage area bem bel fourche lur che river at belle pour four cne south dakota discharges tons ot of gypsum tons of glau bers salts and 23 tons of epsom salts the mud and sit silt carried in suspension by this river amounts to tons milk river niver at havre mont discharges annually annu ally tons of soda payette river in idaho discharges tons salt river nt at roosevelt arizona discharges tons of salt and tons of rasom salts and the rio grande discharges tons of lime and acs tons ot of glaubert Glau bers salts baits |