Summit crater lake observations, and the location, chemistry, and pH of water samples near Mount Chiginagak volcano, Alaska: 2004-2011

Schaefer, J.R. Scott, W.E. Evans, W.C. Wang, Bronwen McGimsey, R.G. 2011 Summit crater lake observations, and the location, chemistry, and pH of water samples near Mount Chiginagak volcano, Alaska: 2004-2011 spreadsheet Report of Investigations RI 2011-6 Fairbanks, AK, USA State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys 25 p., 1 DVD http://www.dggs.alaska.gov/pubs/id/23083 Following the May 2005 acid crater lake flood at Chiginagak volcano, DGGS has been monitoring crater lake water that flows into Indecision Creek, Mother Goose Lake, and the King Salmon River.This data table provides information on water samples collected between 2005 and 2011 near Chiginagak volcano, including:sample ID, latitude, longitude, location description, pH, and cation and anion chemistry results. The purpose of this data table is to document the sample ID, latitude, longitude, location description, pH, and cation and anion chemistry results of water samples near Chiginagak volcano as referred to in this report:Schaefer, J.R., Scott, W.E., Evans, W.C., Wang, Bronwen, McGimsey, R.G., 2011, Summit crater lake observations, and the location, chemistry, and pH of water samples near Mount Chiginagak volcano, Alaska: 2004-2011:Alaska Division of Geological & Geophysical Surveys Report of Investigations RI 2011-6. This distribution package provides the user with CSV and a Microsoft Excel versions of the file. The metadata describes the CSV file. If creating a shapefile with this data be aware that the attribute field names will be truncated after ten characters. The DGGS metadata standard extends the FGDC standard to also include several elements that are required to facilitate our internal data management. These elements relate individual data items to a common dataset. This dataset describes a single layer titled: > Table_2_Chiginagak_water_chemistry_pH_2005-2011 Data table describing sample location, pH, conductivity, and chemistry 2005 2011 ground condition In work As needed -157.66747 -156.977527 57.27744 57.091514 ISO 19115 Topic Category geoscientificInformation None Water Chemistry Volcanoes Volcanology Volcano Hazards Inorganic Contamination Water Quality None Chiginagak Mother Goose Hot Springs Mother Goose Lake Ugashik Quadrangle Geographic Names Information System Mount Chiginagak Volcano Creek Indecision Creek King Salmon River This report, map, and/or dataset are available directly from the State of Alaska, Department of Natural Resources, Division of Geological &Geophysical Surveys (see contact information below). Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys mailing and physical

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Fairbanks AK 99709-3707 USA 907-451-5020 907-451-5050 dggspubs@alaska.gov 8 am to 4:30 pm, Monday through Friday, except State holidays Please view our web site (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. This work was made possible with funding from the U.S. Geological Survey's Volcano Hazard Program as well as the U.S. Department of Interior, Fish and Wildlife Service (USFWS). Microsoft Office Excel Attribute values listed in the final table were checked for consistency by cross-referencing field data sheets and laboratory chemical results as well as plotting the locations and attributes in a GIS. Positional accuracy was checked by plotting locations in a GIS and comparing placed points with topography and map attributes. Chemical values and pH were also plotted in GIS and compared in time series to ensure logical accuracy. At the time of writing, some pH values and chemical data were not processed for samples collected in 2011. When these data become available, they will be provided as an addendum to this table.Conductivity, pH, temperature, and chemical samples were not collected at all sites.At some sites, only pH paper was available, thus a range of pH is given versus sites where pH was taken with a digital pH meter. In the latter case, pH is given to the nearest 1/10th. Horizontal positions (latitude and longitude) were determined with handheld GPS receivers.Although in most cases latitude and longitude are given in decimal degrees to 5 decimal places, the accuracy of this position is likely more coarse, as a GPS station may have been taken 20 meters or more from the exact site in the stream where the water sample was actually taken. Users reoccupying the sampling sites should use care to read the location description information to determine what stream corresponds to what sample site, especially near confluences. Lamothe, P.J. Meier, A.L. Wilson, S.A. 2002 The determination of forty-four elements in aqueous samples by inductively coupled plasma-mass spectrometry, in Analystical Methods for Chemical Analysis of Geologic and Other Material, ed. Taggart document U.S. Geological Survey Open File Report OFR 02-223 Denver, Colorado U.S. Geological Survey http://pubs.usgs.gov/of/2002/ofr-02-0223/ paper 2002 publication date Lamothe et al.,(2002) inductively coupled plasma mass spectrometry (ICP-MS) procedures Latitude and Longitude information was collected using various hand-held GPS units. Location information was recorded in a field notebook, then transferred later to the project database. The pH values were measured in the field using various digital pH meters. The pH meter was calibrated at least once per day using a 2- to 3-point calibration with pH standards of 4, 7, and 10. Surface water samples taken for cation and anion analysis were filtered in the field using a 0.45 micron filter and peristaltic pump, following standard clean techniques.Anion concentrations were determined at the U.S. Geological Survey (USGS) laboratories in Menlo Park, California using a DIONEX ICS-2000 ion chromatograph with hydroxide eluent.Alkalinity (as bicarbonate) was analyzed by potentiometric titration on samples with pH > 5.Samples that contain more than about 100 mg/L of any one analyte are diluted prior to analysis, resulting in more than one detection limit per analyte.In some cases "bdl" is used as the default "below detection limit" indicator. If concentrations of analytes were high (generally >100 mg/L) Major cation and trace element concentrations were determined at the USGS Mineral Program laboratories in Denver, Colorado, by inductively coupled plasma mass spectrometry (ICP-MS) using procedures described by Lamothe et al.,(2002). Lamothe et al.,(2002) 2011 Point 0.00001 0.00001 Decimal degrees World Geodetic System of 1984 World Geodetic System of 1984 6378137 298.25722210088 Table_2_Chiginagak_water_chemistry_pH_2005-2011 Table_2_Chiginagak_water_chemistry_pH_2005-2011.csv Data table describing sample location, pH, conductivity, and chemistry This report StationID Unique Station Identifier This report Unique Station Identifier Map_Label_Chig_pub2 Map Label on Figure 1 of DGGS RI 2011-6 This report Map Label Longdd_wgs84 Longitude in decimal degrees; WGS84 datum This report -157.667945 -156.977508 Latdd_wgs84 Latitude; WGS 84 datum This report 57.091514 57.277643 Geologist Name of person who collected the sample This report Geologist Name in the format: last name, first name middle name or middle initial DateVisited Date of station visit This report 20 August 2005 23 August 2011 LocationDescription Text description of station location This report Text description of station location TextDescription Text description of sample This report Text description of sample tblChigwaterpHtempcond.SampleID Unique Sample Identifier This report Unique sample identifier extracted from table ChigwaterpHtempcond in Chiginagak sample database pH pH value This report 1.2 7.4 blank fields indicate no pH was taken 8.4*Suspect pH value. See column "Text Description" for explanation T_air Air Temperature in degrees Celsius This report 10.0 17.2 Degrees Celsius Blank fields indicate no temperature reading was recorded T_water Temperature of water in degrees Celsius This report 1.6 65.7 degrees Celsius Blank fields indicate no air temperature was taken T_water_pHmeter Temperature of water in degrees Celsius recorded by a pH meter This report 1.3 48.8 degrees Celsius Blank values indicate temperature was not taken with pH meter T_air_pHmeter Temperature of the air in degrees Celsius recorded with the pH meter This report 10.6 14.6 degrees Celsius Blank fields indicate no air temperature reading was taken with the pH meter Conductivity Conductivity measured in microSiemens This report 43 2580 microSiemens The values 900-1,170 and 968+ indicate that the conductivity meter would not stabilize on a single value, thus an approximate value is given for these two samples Blank fields indicate conductivity was not measured qryWaterAnalysis.tblsampleid.SampleID Unique Sample Identifier from table tblsampleid in Chiginagak sample database This report Unique Sample Identifier lab_no ICP-MS laboratory-assigned sample number This report ICP-MS laboratory-assigned sample number Ag Silver This report <1 Less than detection limit This report <3 less than detection limit This report Blank field indicates no sample analyzed Al Aluminum This report 2.1 59,300 micrograms per Liter <2 below detection limit This report nr not analyzed This report As Arsenic This report 1.7 27.1 micrograms per Liter <1 below detection limit This report Blank field indicates no sample analyzed Ba Barium This report Blank field indicates no sample analyzed 0.74 45.4 micrograms per Liter Be Beryllium This report 0.05 0.9 micrograms per Liter Blank field indicates no sample analyzed < 0.05 below detection limit This report Bi Bismuth This report Blank field indicates no sample analyzed < 0.2 below detection limit This report 0.38 0.38 micrograms per Liter Ca_mgl Calcium This report Blank field indicates no sample analyzed 3.26 247 milligrams per Liter Cd Cadmium This report Blank field indicates no sample analyzed 0.02 1.52 micrograms per Liter < 0.02 below detection limit This report Ce Cerium This report Blank field indicates no sample analyzed 0.01 31.6 microgram per Liter < 0.01 below detection limit This report Co Cobalt This report Blank field indicates no sample analyzed 0.03 44.2 micrograms per Liter Cr Chromium This report Blank field indicates no sample analyzed 1 10.2 micrograms per Liter <1 Less than detection limit This report Cs Cesium This report Blank field indicates no sample analyzed < 0.02 below detection limit This report 0.02 8.48 micrograms per Liter Cu Copper This report <0.5 below detection limit This report Blank field indicates no sample analyzed 0.54 39.8 micrograms per Liter Dy Dysprosium This report < 0.005 below detection limit This report Blank field indicates no sample analyzed 0.007 4.72 micrograms per Liter Er Erbium This report Blank field indicates no sample analyzed < 0.005 below detection limit This report 0.007 2.46 micrograms per Liter Eu Europium This report Blank field indicates no sample analyzed < 0.005 below detection limit This report 0.005 0.97 micrograms per Liter Fe Iron This report Blank field indicates no sample analyzed <50 below detection limit This report 52 40,200 micrograms per Liter Ga Gallium This report Blank field indicates no sample analyzed < 0.05 below detection limit This report 0.05 5.4 micrograms per Liter Gd Gadolinium This report Blank field indicates no sample analyzed < 0.005 below detection limit This report 0.008 6.39 micrograms per Liter Ge Germanium This report Blank field indicates no sample analyzed < 0.05 below detection limit This report 0.05 8.4 micrograms per Liter na not analyzed This report Ho Holmium This report Blank field indicates no sample analyzed < 0.005 below detection limit This report 0.007 0.91 micrograms per Liter K_mgl Potassium This report Blank field indicates no sample analyzed 0.2 49.9 milligrams per Liter La Lanthanum This report Blank field indicates no sample analyzed < 0.01 below detection limit This report 0.01 12 micrograms per Liter Li Lithium This report Blank field indicates no sample analyzed < 0.01 below detection limit This report 0.2 161 micrograms per Liter Lu Lutetium This report Blank field indicates no sample analyzed < 0.1 below detection limit This report 0.1 0.3 micrograms per Liter na not analyzed This report Mg_mgl Magnesium This report Blank field indicates no sample analyzed 0.64 172 milligrams per Liter Mn Manganese This report Blank field indicates no sample analyzed 8.9 1,820 micrograms per Liter Mo Molybdenum This report Blank field indicates no sample analyzed < 2 less than detection limit This report 2.6 3.2 micrograms per Liter Na_mgl Sodium This report Blank field indicates no sample analyzed nr not analyzed This report 1 140 milligrams per Liter Nb Niobium This report Blank field indicates no sample analyzed < 0.2 below detection limit This report 0.29 1.19 micrograms per Liter Nd Neodymium This report Blank field indicates no sample analyzed < 0.01 below detection limit This report 0.01 21 micrograms per Liter Ni Nickel This report Blank field indicates no sample analyzed < 0.4 below detection limit This report 0.5 28.1 micrograms per Liter P_mgl Phosphorous This report Blank field indicates no sample analyzed < 0.01 below detection limit This report 0.01 0.6 milligrams per Liter Pb Lead This report Blank field indicates no sample analyzed < 0.05 below detection limit This report 0.05 3.8 micrograms per Liter Pr Praseodymium This report Blank field indicates no sample analyzed < 0.01 below detection limit This report 0.01 4.58 micrograms per Liter Rb Rubidium This report Blank field indicates no sample analyzed 0.24 86.2 micrograms per Liter Sb Antimony This report Blank field indicates no sample analyzed <0.3 below detection limit This report 0.34 1.19 micrograms per Liter Sc Scandium This report Blank field indicates no sample analyzed < 0.6 below detection limit This report 0.6 34.6 micrograms per Liter Se Selenium This report Blank field indicates no sample analyzed < 1 below detection limit This report 1 7.7 micrograms per Liter SiO2_mgl Silicon dioxide This report Blank field indicates no sample analyzed 3.9 179 milligrams per Liter Sm Samarium This report Blank field indicates no sample analyzed < 0.01 below detection limit This report 0.01 4.89 micrograms per Liter SO4_mgl Sulfate This report Blank field indicates no sample analyzed 9 762 milligrams per Liter Sr Strontium This report Blank field indicates no sample analyzed 9.18 753 micrograms per Liter Ta Tantalum This report Blank field indicates no sample analyzed < 0.02 below detection limit This report 0.02 0.1 micrograms per Liter Tb Terbium This report Blank field indicates no sample analyzed < 0.005 below detection limit This report 0.005 0.93 micrograms per Liter Th Thorium This report Blank field indicates no sample analyzed < 0.2 below detection limit This report 0.63 0.63 micrograms per Liter Ti Titanium This report Blank field indicates no sample analyzed < 0.5 below detection limit This report 0.5 17.4 micrograms per Liter Tl Thallium This report Blank field indicates no sample analyzed <0.1 below detection limit This report 0.1 2 micrograms per Liter Tm Thulium This report Blank field indicates no sample analyzed < 0.005 below detection limit This report 0.008 0.31 micrograms per Liter U Uranium This report Blank field indicates no sample analyzed < 0.1 below detection limit This report 0.1 0.34 micrograms per Liter V Vanadium This report Blank field indicates no sample analyzed <0.5 below detection limit This report 0.5 103 micrograms per Liter W Tungsten This report Blank field indicates no sample analyzed < 0.5 below detection limit This report 0.75 1.08 micrograms per Liter Y Yitrium This report Blank field indicates no sample analyzed 0.01 23.6 micrograms per Liter < 0.01 below detection limit for samples run in 2010 This report Yb Ytterbium This report Blank field indicates no sample analyzed 0.005 1.96 micrograms per Liter < 0.005 below detection limit for samples run prior to 2010 This report < 0.01 below detection limit for samples run in 2010 This report Zn Zinc This report Blank field indicates no sample analyzed <3 less than detection limit This report 0.9 156 micrograms per Liter Zr Zirconium This report Blank field indicates no sample analyzed < 0.2 below detection limit This report na not analyzed This report 0.4 0.5 micrograms per Liter tblChigWaterAnion.SampleID SampleID from internal database table ChigWaterAnion This report Unique Sample ID from internal database table ChigWaterAnion Blank field indicates no sample analyzed F Fluoride This report Blank field indicates no sample analyzed <0.05 below detection limit This report 0.03 18 micrograms per Liter Cl Chloride This report Blank field indicates no sample analyzed 1.25 466 micrograms per Liter SO4 sulfate This report Blank field indicates no sample analyzed 10.8 622 micrograms per Liter Br Bromide This report Blank field indicates no sample analyzed <0.05 below detection limit This report <0.01 below detection limit This report 0.006 0.66 micrograms per Liter bdl below detection limit This report NO3_N Nitrate This report Blank field indicates no sample analyzed <0.01 below detection limit This report <0.05 below detection limit This report <0.1 below detection limit This report 0.01 1 micrograms per Liter PO4_P Phosphate This report Blank field indicates no sample analyzed <0.01 below detection limit This report <0.05 below detection limit This report <0.1 below detection limit This report <0.02 below detection limit This report <0.2 below detection limit This report 0.01 0.16 micrograms per Liter HCO3_alk bicarbonate This report Blank field indicates no sample analyzed <5 below detection limit This report acid pH of sample less than 5.5; alkalinity not analyzed This report 5 408 micrograms per Liter State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys mailing and physical

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Fairbanks AK 99709-3707 USA 907-451-5020 FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 If the user has modified this metadata file in any way, the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent this metadata file, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. http://www.dggs.alaska.gov/metadata/dggs.ext dggs metadata extensions