Open-File Report 2006–1058

U.S. GEOLOGICAL SURVEY
Open-File Report 2006–1058

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Table 17. Physical properties and chemical analyses of water from selected springs that discharge from the N aquifer, Black Mesa area, Arizona, 2005.

[°C, degree Celsius; µS/cm, microsiemens per centimeter at 25°C; mg/L, milligram per liter; µg/L, microgram per liter; <, less than. Dashes indicate no data]

Spring name Bureau of Indian
Affairs site No.		 U.S. Geological Survey
identification No.		 Date of
sample		 Temperature,
field (°C)		 Specific
conductance,
field (µS/cm)		 pH, field
(units)
Burro Spring 6M-31 354156110413701 03–28–05 --- 558 7.4
Moenkopi School Spring 3GS-77-6 360632111131101 04–04–05 17.3 349 7.4
Unnamed spring near Dennehotso 8A-224 364656109425400 04–06–05 8.4 194 7.7
Pasture Canyon Spring 3A-5 361021111115901 04–27–05 16.1 250 7.6
Spring name Alkalinity, field,
dissolved
(mg/L as CaCO3)		 Nitrogen
NO2 + NO3,
dissolved
(mg/L as N)		 Ortho-phosphate,
dissolved
(mg/L as P)		 Calcium,
dissolved
(mg/L as Ca)		 Magnesium,
dissolved
(mg/L as Mg)
Burro Spring 190 0.21 <0.02 47.9 3.22
Moenkopi School Spring 107 2.54 <.02 33.2 6.96
Unnamed spring near Dennehotso 87 1.88 .02 26.9 4.05
Pasture Canyon Spring 80 4.49 1.02 30.5 4.43
Spring name Potassium,
dissolved
(mg/L as K)		 Sodium,
dissolved
(mg/L as Na)		 Chloride,
dissolved
(mg/L as Cl)		 Fluoride,
dissolved
(mg/L as F)		 Silica,
dissolved
(mg/L as SiO2)
Burro Spring 0.51 75.4 25.8 0.5 13.5
Moenkopi School Spring 1.47 27.5 23.3 .2 13.4
Unnamed spring near Dennehotso 1.15 5.97 2.65 .2 12.1
Pasture Canyon Spring 1.46 12 5.07 .2 10.0
Spring name Sulfate,
dissolved
(mg/L as SO4)		 Arsenic,
dissolved
(µg/L as As)		 Boron,
dissolved
(µg/L as B)		 Iron,
dissolved
(µg/L as Fe)		 Dissolved solids,
residue at
180°C (mg/L)
Burro Spring 68.9 1.5 88 <6 357
Moenkopi School Spring 29.6 2.8 39 <6 212
Unnamed spring near Dennehotso 8.7 3.0 18 <6 114
Pasture Canyon Spring 16.3 2.0 33 <6 149

1Estimated value.

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