Surface water samples were collected within the Boulder Creek Watershed in Gordon Gulch from 2009 to current. Throughout the year, samples were regularly collected at two stream sites and at two spring sites. During the spring and summer, daily samples were collected via autosampler. Samples were filtered by Boulder Creek CZO Water Chemistry Lab with 0.45µm and 1µm filters. Samples were analyzed for conductivity, major ions, alkalinity, nutrients and organics, and water isotopes. Major ions analyzed regularly included H+, Ca+, K+, Mg2+, Na+, Cl-, NO3-, SO4-, Si, and SiO2 and occasionally included NH4+, Al+, Fe+, Mn+. Nutrients and organics analyzed mainly included DOC, IN, DON, TDN, IP, DOP, and TDP. Water isotopes analyzed included O18 and D.
From 2009 to 2011, Gordon Gulch surface water samples were analyzed by the Kiowa Laboratory (conductivity, alkalinity, cations, anions, O18, and deuterium) and by the Organic Matter Spectroscopy Laboratory (nutrients and organics). From 2011 to present, Gordon Gulch surface water samples were analyzed by the Boulder Creek CZO Lab (conductivity, alkalinity, and anions), the Organic Matter Spectroscopy Laboratory (nutrients and organics), the Laboratory for Environmental and Geological Sciences (cations), and the Barnard Ecohydrology Lab (O18 and deuterium).
Date Range: May-02-2008 to varies on location
Dataset Creators/Authors: Suzanne Anderson, Clayton Jensen
Field Area: Gordon Gulch
Location, Collection Date, Collection Time, Air Temp(C), Cloud Cover(%), Water Temp(C), Wind,(Major Ions and Si)H+(uEQ/L) Ca++(ppm), Ca++(uEQ/L), K+(ppm), K+(uEQ/L), Mg++(ppm), Mg++(uEQ/L), Na+(ppm), Na+(uEQ/L), NH4+(uEQ/L), Cl-(ppm), Cl-(uEQ/L), NO3-(ppm), NO3-(uEQ/L), SO4=(ppm), SO4=(uEQ/L), Si ICP Centrifuge(ppm), Si ICP(ppm), SiO2 Colorimetric(uM/L), SiO2 ICP Centrifuge(ppm), SiO2 ICP(ppm), SUM+, SUM-, Charge Bal, % Diff Charge Bal, ANC(uEQ/L), ANC(mg/L), (Nutrients)DOC mg C/L, IN(uM/L), PN(uM/L), TN(uM/L), DON(uM/L), TDN(uM/L), IP(uM/L), PP(uM/L), TP(uM/L), DOP(uM/L), TDP(uM/L), Phaeophytin(ug/L),(Water Isotopes) D-EXCESS/mill, d18O/mill, d18 1sigma, dD/mill, Tritium(TU), Tritium 1sigma, Lab Conductivity, Field Conductivity
GGL_SW_0, Sample Coll: Manual, Water Chemistry, Stream Water sampling site
GGL_SW_0_ISCO, Sample Coll: Automated, Water Chemistry, ISCO automatic water sampler
GGU_SW_0, Sample Coll: Manual, Water Chemistry, Stream Water sampling site
GGU_SW_0_ISCO, Sample Coll: Automated, Water Chemistry, ISCO automatic water sampler
GGU_SPW_1, Sample Coll: Manual, Water Chemistry, Stream Water sampling site
GGU_SPW_2, Sample Coll: Manual, Water Chemistry, Stream Water sampling site
*Data Includes Blanks, and time stamped ISCO samples e.g. GGL_SW_0_ISCO 1300, GGL_SW_0_ISCO 1500, etc.
LOCATION LAT LONG UL: WGS 1984, 40.01946, -105.47615
LOCATION LAT LONG LR: WGS 1984, 40.012996, -105.458517
ELEVATION METERS (AVG), 2527.131591
Surface water chemistry, Gordon Gulch
Suzanne Anderson (2013). "CZO Dataset: Gordon Gulch - Surface Water Chemistry (2008-ongoing) - (GG_SW_Array)." Retrieved 26 Oct 2015, from https://criticalzone.org/boulder/data/dataset/3065/
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