Prairie County 



•B 



onservatlon District 



406-635-5381 



ESTIMATING RECHARGE TO GROUNDWATER IN 

 EASTERN MONTANA— CHERRY CREEK DRAINAGE 





Prairie I'ount) Ct>aservallon District and .|ame.s Knstnl the 

 Mitnlana Bureau of Mines and <;e«h>nj entered Inlii a Joint 

 s!ud> Tor determining Innilrallun rvchar^e contrihullons to 

 the jjrnundwater <(f the upper Kort L nion tormatlon In 

 eastern Montiinu. Kesults trom the Cherr> (reek stud> site 

 near lerr> ean lie applied tonn>und\*:iter ina lar^e sejiment 

 ofea-stem Montana. I he primar) purpose of thi-s study Is to 

 provide Information to help the public and private sectors 

 make declshins <m how tt> manage, protect, and develop the 

 area's j^nmndwater resources. 



lit (Ar Trrttarr tor 



Thb tofarmalkai olll bt uwrul in snoirrmK 



• It dirrt mir fh^mr of miing tmoAJw^tr ^ 

 ' /■ at aqntfrr't mk^gr-s>-r tai^ fmalift 



mqmi/m' 



* .^rt iAmB^w wrili faUaig dar la dnraghl ' 



• It Mtf t^ird aiT of groamJm^fr cajaint: miKeT 

 Irrtb M dftliKf ' 



hXETHOO OF STUDY Cjn tuiv\a wtn coUtt^ca ^ 

 (ow Mc* 01 the Cherry Crrck drauufc The com were 

 colkacd uung an luger <fri D <nd ojMinuxB cure u n^ta 

 m2-foM ■itcnil* to*" Fcrl iit«.-ui the lc>rl u( the ««I(t 

 UUel The ufT^ei *erc Nctm imo 1 fiMia iMcrvalt, 

 MCftd n >m. and tntufxTteiJ to the MoniMu Durrju at 

 Mne> awl G«otof ) Ub m Bune At (he Uh • pcviKn o( 

 the Miifttr wj* mied wih tlnmiud wjlct and tfirml 

 («rci|MhcNnk>ilnao4vcMiydtkei>Jcinthc«oil iMoihe 

 wMct The wurr wm decwMcd imu fluka Silver nitnlc 

 aw triMcd Mo Bte (feurt *ato> ka« 1 1 pt 'Oh win I hrv<n«ie 

 ■••lonnMLatBifif «cohirc(uniretL'relk>B Thcun^sii 

 o( nl vfr fiinle rvqunvd w «• UKd to ltd CTIIV1C ihe 1 rmuil 

 of cfetondeprseni mihe umple The anvunoTchhVHlc 

 preacM «m ukH Io otimde the amiunl >^f mtta imm 

 preapttMMiei Uul hm ■nnilnMi] Uvough thr vatfcMC lonc 

 10 Ihe WBier ubie 



/.andtct^ra/ l*it In* 



PFRMKAMF TTR- A pcnncMnetc* wm lunl to 

 ■nran>e the rato of wiIct mrillmioa ihrough 

 (he UmI Miiface and Ibc i^^pcr few centimcten 

 arml AlufccallhchaM'uflhrpeniicuneleTLt 

 filaccd on Ihe grnund lurface ot a Ten 

 coitimclfTi bcknt the nirfaLe IV upper tube 

 u Tillnl mill walei \^ water m the upper ruhc 

 tlraini thtvu)^ die lower lube and into the 

 grnurai. the rtfc oi ibaiiugr is muRlcid at I - 

 minute inlcriaLt IV mulls arc ^pfced. and 

 Ihe nlc of water mfillralKin cm be calculatod 

 tnxn Ihe data. 



DATA RFCORni H IV lUU 

 rectcclcr rrtonli the water level 

 m the miviitot wdl e»rrv hour, 

 vrn nwniL The UaU are ik'wn 

 luaded and ilufcd in thr 

 MfmUm Buirau of Minri ani! 

 (ienlog) daUbaae 



M«fr Ma^n mpfw litrmtioH ttwrnutg («''* 

 chauft ntJx^int tMorwtiMi vftrtmlmtt am4 



