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~ to -J :JJ salinity. Annlyses of the r.reen Rivet' near the Green Rivet station indicate that electrical conductivity (a meaSUle of salillity) remains high 01- may incrf'ase vilh flo.... peaks associated vith SllOlolmelt 1'1Inoff events ill Janll;\lY through Api i 1. During Reclamation studies Unit. it ....as found that approximately be related to rUlloff events. i /lVes t iga t i OilS by Rec lama t ion sha..... budget and 14 pet-cent of the San natural runoff. on the Hcflmo CreEok Sal ini ty Contrnl 32 percent of the total sal t load could Similally, rer.:enl salinity {'ontro] that 21 percent of the Price River salt Ri'lfael Rivet- salt budget aloe related to Studies 1191 conrluC'terl nn Mancos Sh<tle vilhin The 1Jpper rolor-arla River Basin h.,ve denlonstl"f1terl a positive le]atiom:hip hf>t...een serliment yield and Sa} [production. Sediment yield increases as a resuI t of pi ther upland erosion or streambank <lnd gully erosion. Upland erosion is a!tribllted to rill anri interi II flo.... Sal t and sediment yielrls al(, rl('pendent upon slOl.m period, landform type, and the soluble mineral content of the geologic formation. Studies 1201 conducted in the Price River Basin have r1emonstratpd thelt the highest salt and sediment concentrations occllr ill the first stl f'amtlo... event fullo....inp; a long pel iad of no r1isl.:harge. The accumulaT ion of salts in the channel may be attributed to efflorescence resulting from the drying of the channel. Sal t yields DeClining aftel" th(> ini t ial flushing of the channel are similar to those found in the sunoundinp; ...atershed soils. Sediment and the landform type. Three major valleys--are associated ...i th resulting salt yield is Lmdform types--hadlanos, the Mancos Shale terrain. highly dependent upon pedimL'llts, and alluvial Badlands are the most el-osionally IInstable, vi th sediment yields as l<lrge as 15 tons per acr(> 121). Rilling ;lCCOUllts for approximately AO percent of the elosion 1201. Because salt produl'tioll is clnsely related to sediment yield and the badland soils have not been leor1ched of their soluble minerals, they produce the greatest amount of salt of the landform types. Pediments are gently inclined planate erosinn SUI-face carved in bedrock and generally veneel-ed ~ith fluvial Rlavels. The surface slopes of pediments are gentle. making them relatively stable. Pediments have deeper soils and highel- infilndtion rates than badlands. thus they SllPPOlt a greater vegetation covel- and are less erosive. Alluvial valleys are formed by a chanp;e in gradient clOd the oeposition of sediment. They are st,lille excppt alollp, tlIP channel vhere headculting and gullying occur. Mo~t ot the ';a1ts have l)(~erl leached from the alluvi;)l deposits, thus ('rasion of theil. lanrlform type yields less salts per unit volume of sediment than the other tvo landfol-m types. flolorever. channels incised into alluvium incorporate both sediment and salt from slollghed channel backs and salts from efflorescence at the alluvium-bedrock cOlltacts 119). The solllble mineral content of saJinp formarions is 'Jari<lhlp and can be significantly differ-ent ....ithin one stratigraphic unit. The variability is a result of the parent material. topography. minoel imate. ann leaching. As a result. the salts heing contrihuten from any stratigraphic (mit <-lIE' very site sped t ic. V-7