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*To*: "David L Parkhurst" <dlpark@xxxxxxxx>*Subject*: RE: SOlution Fractions*From*: "Ranjan S. Muttiah" <muttiah@xxxxxxxxxxxxx>*Date*: Wed, 10 Jul 2002 10:54:56 -0500*Importance*: Normal*In-reply-to*: <OF1068876C.F6DFD580-ON87256BF2.00536870@cr.usgs.gov>*In-reply-to*: <NFBBJFDDBBBCHIDBODCJEEJCCMAA.muttiah@brc.tamus.edu>*Reply-to*: <muttiah@xxxxxxxxxxxxx>

>I'm not sure about your setup. If streams A and B mix to >form stream C, >then yes, the mixing fractions of A and B should be >approximately the relative flows of A and B. The measurements are on A (Sumner,NM) and downstream of A at B (Acme, NM) on the Pecos. I put in all the anion/cation measurements at A and B and get -200.2 for H2O mole transfer (see attached for input file). Looking at the stream flow record, there's 80 cfs at A and 15 cfs at B on the days of measurement. I'm assuming that the difference has been lost to evaporation and channel loss. The mixing ratio gives soln1:2 of 4.6:1 from the model. Should I take this to mean that the model estimates that 3.6 kg (= 200.2/55.5) of water was lost at B for every kg of water @ A due to evaporation ? (the recorded stream flow loss gives 80/15 = 5.7). How should I interpret the 4.6 ratio ?

**Attachment:
Pecos_SumnerAcmeSep1962.pqi**

**References**:**SOlution Fractions***From:*Ranjan S. Muttiah

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