Ground-Water Information Center Water Quality Report Site Name: DRINKING HORSE CREEK DHCK Report Date: 4/26/2024 Compare to Water Quality Standards Location Information Sample Id/Site Id: 2011Q0460 / 259639 Sample Date: 9/22/2010 5:45:00 PM Location (TRS): 01S 06E 34 CB Agency/Sampler: MBMG / SCHAFFER, MARK A. Latitude/Longitude: 45° 42' 18" N 110° 58' 41" W Field Number: DHCK Datum: WGS84 Lab Date: 1/14/2011 Altitude: Lab/Analyst: MBMG / SM County/State: GALLATIN / MT Sample Method/Handling: / 4000 Site Type: STREAM Procedure Type: DISSOLVED Geology: Staff Gage Reading: NR USGS 7.5' Quad: KELLY CREEK Stream Stage: NR PWS Id: Stream Discharge (cfs): NR  -  NR Project: BRIDGER Stream Width (ft): NR  -  NR Sample Water Use: Sample Depth (ft): NR  -  NR Major Ion Results mg/L meq/L mg/L meq/L Calcium (Ca) 83.700 4.177 Bicarbonate (HCO3) 329.400 5.399 Magnesium (Mg) 29.100 2.395 Carbonate (CO3) 11.470 0.411 Sodium (Na) 28.700 1.248 Chloride (Cl) 2.280 0.064 Potassium (K) 3.690 0.094 Sulfate (SO4) 92.310 1.923 Iron (Fe) <0.020 0.000 Nitrate (as N) <0.05 0.000 Manganese (Mn) 0.028 0.001 Fluoride (F) 0.244 0.013 Silica (SiO2) 17.200 Orthophosphate (as P) <0.1 0.000 Total Cations 7.937 Total Anions 7.810 Trace Element Results (µg/L) Aluminum (Al): 9.250 Cesium (Cs): <0.5 Molybdenum (Mo): 0.922 Strontium (Sr): 731.000 Antimony (Sb): <0.2 Chromium (Cr): <0.2 Nickel (Ni): 1.570 Thallium (Tl): <0.2 Arsenic (As): 2.250 Cobalt (Co): 1.230 Niobium (Nb): <0.2 Thorium (Th): <0.2 Barium (Ba): 87.300 Copper (Cu): 0.608 Neodymium (Nd): <0.2 Tin (Sn): <0.2 Beryllium (Be): <0.2 Gallium (Ga): <0.2 Palladium (Pd): <0.5 Titanium (Ti): 1.040 Boron (B): 39.400 Lanthanum (La): <0.2 Praseodymium (Pr): <0.2 Tungsten (W): <0.2 Bromide (Br): <50 Lead (Pb): <0.2 Rubidium (Rb): 0.923 Uranium (U): 1.840 Cadmium (Cd): <0.2 Lithium (Li): 14.100 Silver (Ag): <0.2 Vanadium (V): 0.819 Cerium (Ce): <0.2 Mercury (Hg): NR Selenium (Se): 0.368 Zinc (Zn): <1.0 Zirconium (Zr): <0.2 Field Chemistry and Other Analytical Results **Total Dissolved Solids (mg/L): 429.88 Field Hardness as CaCO3 (mg/L): NR Ammonia (mg/L): NR **Sum of Diss. Constituents (mg/L): 596.81 Hardness as CaCO3: 328.77 T.P. Hydrocarbons (µg/L): NR Field Conductivity (µmhos): NR Field Alkalinity as CaCO3 (mg/L): NR PCP (µg/L): NR Lab Conductivity (µmhos): 593 Alkalinity as CaCO3 (mg/L): 288.18 Phosphorus, TD (mg/L): 0.199 Field pH: NR Ryznar Stability Index: 5.535 Field Nitrate (mg/L): NR Lab pH: 8.7 Sodium Adsorption Ratio: 0.6959 Field Dissolved O2 (mg/L): NR Water Temp (°C): NR Langlier Saturation Index: 1.582 Field Chloride (mg/L): NR Air Temp (°C): NR Nitrite (mg/L as N): <0.05 Field Redox (mV): NR Nitrate + Nitrite (mg/L as N) <0.2 P Hydroxide (mg/L as OH): NR Lab, Dissolved Organic Carbon (mg/L): NR Total Kjeldahl Nitrogen (mg/L as N) NR Lab, Dissolved Inorganic Carbon (mg/L): NR Lab, Total Organic Carbon (mg/L): NR Total Nitrogen (mg/L as N) <1.0 P Acidity to 4.5 (mg/L CaCO3) NR Acidity to 8.3 (mg/L CaCO3) NR As(III) (ug/L) NR As(V) (ug/L) NR Total Susp Solids (mg/L) NR Notes Sample Condition: Field Remarks: SAMPLE FROM POOL ABOVE WEIR Lab Remarks:

Explanation: mg/L = milligrams per Liter; µg/L = micrograms per Liter; ft = feet; NR = No Reading in GWIC Qualifiers: J = Estimated quantity above detection limit but below reporting limit; P = Preserved sample; S = Method of standard additions; U = Undetected quantity below detection limit; * = Duplicate analysis not within control limits; ** = Sum of Dissolved Constituents is the sum of major cations (Na, Ca, K, Mg, Mn, Fe) and anions (HCO3, CO3, SO4, Cl, SiO2, NO3, F) in mg/L. Total Dissolved Solids is reported as equivalent weight of evaporation residue. Disclaimer These data represent the contents of the GWIC databases at the Montana Bureau of Mines and Geology at the time and date of the retrieval. The information is considered unpublished and is subject to correction and review on a daily basis. The Bureau warrants the accurate transmission of the data to the original end user. Retransmission of the data to other users is discouraged and the Bureau claims no responsibility if the material is retransmitted.