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Note: this data release has been superseded by version 2.0, available here: https://doi.org/10.5066/P14AZJX5 Data were collected as part of a long-term capture-recapture program to assess the population dynamics of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrations in each year since 1995. Cormack-Jolly-Seber (CJS) open population capture-recapture models were used to estimate annual survival probabilities, and a reverse-time analog of the CJS model was used to estimate recruitment...
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Data were collected as part of a long-term capture-recapture program to assess the population dynamics of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrations in each year since 1995. Cormack-Jolly-Seber (CJS) open population capture-recapture models were used to estimate annual survival probabilities, and a reverse-time analog of the CJS model was used to estimate recruitment of new individuals into the spawning population. In addition, data on the size composition of captured fish...
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Monitoring the community structure and metabolic activities of cyanobacterial blooms in Upper Klamath Lake, Oregon, is critical to lake management because these blooms degrade water quality and produce toxic microcystins that are harmful to humans, domestic animals, and wildlife. Genetic tools, such as DNA fingerprinting by terminal restriction fragment length polymorphism (T-RFLP) analysis, high-throughput DNA sequencing (HTS), and real-time, quantitative polymerase chain reaction (qPCR) provide more sensitive and rapid assessments of bloom ecology than traditional techniques. The objectives of this study were (1) to characterize the microbial community at one site in Upper Klamath Lake and determine changes in...
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Arsenic (As) toxicity is a global environmental and health problem. There are both natural (eg volcanic activity) and anthropogenic sources of As (eg lead arsenate and copper arsenate were commonly used pesticides in the 1900’s). Aqueous levels of arsenic in the Klamath Basin (CA, OR), which has a volcanic origin, can exceed at some locations both the Oregon Department of Environmental Quality human health water quality criteria (2.1 ug/L) (Sturdevant, 2011) and the US EPA drinking water limit (10 ug/L) (US EPA., 2001). In this study, dissolved concentrations of As, copper (Cu) and lead (Pb) were measured in more than 30 sites within the Klamath Basin between May and October. Results from samples collected between...
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Ten groundwater piezometers and lake-level stilling wells were deployed in Upper Klamath Lake (UKL), Oregon during May through October 2017. Piezometers and stilling wells were deployed in pairs so that water levels could be measured relative to a common measuring point (MP) at each location. Piezometers and stilling wells were instrumented with recording pressure transducers. Discrete depth-to-water check measurements were collected at all ten locations at about two-week intervals using a calibrated electric water-level tape to verify and, if necessary, correct the continuous data record. This data set contains discrete depth-to-water check measurements.
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This data set contains continuous measured groundwater and lake water-level data and continuous derived vertical hydraulic gradient (VHG) data. Water-levels were measured in paired groundwater piezometers and lake-level stilling wells with submerged pressure transducers during May through October 2017 at nine locations in Upper Klamath Lake (UKL), Oregon. Continuous water-level data was barometrically compensated, corrected for shifts, and converted to values of water level below MP using discrete depth to water-level measurements. Continuous groundwater and lake water-level data were used to calculate vertical hydraulic gradient (VHG). Any data that were determined to be unrepresentative (effects from waves or...
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This data release contains the model inputs, outputs, and source code (written in R) for the boosted regression tree (BRT) and artificial neural network (ANN) models developed for four sites in Upper Klamath Lake which were used to simulate daily maximum pH and daily minimum dissolved oxygen (DO) from May 18th to October 4th in 2005-12 and 2015-19 at four sites, and to evaluate variable effects and their importance. Simulations were not developed for 2013 and 2014 due to a large amount of missing meteorological data. The sites included: 1) Williamson River (WMR), which was located in the northern portion of the lake near the mouth of the Williamson River and had a depth between 0.7 and 2.9 meters; 2) Rattlesnake...
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Ten groundwater piezometers and lake-level stilling wells were deployed in Upper Klamath Lake (UKL), Oregon during May through October 2017. Piezometers and stilling wells were deployed in pairs so that water levels could be measured relative to a common measuring point (MP) at each location. Piezometers were installed in the lakebed sediment, with screens from 3.92 to 4.92 feet below the sediment-water interface (lakebed). Stilling wells were screened open to the lake. Continuous water-level data were collected at nine locations using submerged pressure transducers. One barometric pressure transducer was deployed so that continuous water-level data could be barometrically compensated. Discrete depth-to-water check...
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The associated geotiff rasters represents the total actual evapotranspiration (ETa) from June through September for the years 2004, 2006, 2008-2010, and 2013-2016 for the entire Klamath Basin in southern Oregon. The ETa was created using Landsat imagery and the Operational Simplified Surface Energy Balance (SSEBop) model to estimate actual ET and the Python scripts to complete that process is also provided. Additionally, the June-September average (mean) ETa for the "base years" of 2004, 2006, 2008-2010 and ETa Anomaly (deviation from the base years average mean) for each year between 2013-2016 is provided. Text files of SSEBop daily actual ET along with actual ET from Ameriflux eddy co-variance flux tower sites...
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This release contains data from field and laboratory tests conducted by the USGS Groundwater Dating Laboratory between 2014 and 2017 during the development of a new dissolved and gas phase carbon dioxide sensor. The release also contains results of calibration, intercomparison, temperature, humidity, and stability experiments, as well as monitoring studies of CO2 in soil surface gas in the Amargosa Desert during the Toxic Substances Hydrology Amargosa Desert Research Site (ADRS) project, and measurements of dissolved CO2 (pCO2) in Upper Klamath Lake, in laboratory plant mesocosm studies at USGS headquarters in Reston, Virginia, as well as in creeks and streams in Northern Virginia.
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Data included in this data set are for trap net captured juvenile suckers from Upper Klamath Lake, Oregon starting in 2001. Data were collected on fishing effort, the number of suckers captured, sucker length, and sucker species. There are two levels of data. Net level data contains 14,838 records and the data file is 2,069 KB and fish level data contains 25,236 records and the data file is 1,543 KB. The two files can be linked on SampleID and DatePulled, which is unique to each net set. Data files are comma delimited.
The U.S. Geological Survey (USGS) Data Release provides phytoplankton data from eight sites located in Upper Klamath Lake, OR from 6/28/2010 to 9/19/2018. Phytoplankton data are reported to the lowest possible taxonomic level and biovolume, biomass, and density are reported.
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Data were collected as part of a long-term capture-recapture program to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon and Clear Lake Reservoir, California. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrations in each year since 1995.PIT tagged species were encountered in netting efforts, remote transceivers, and active scanning on bird colonies across the Upper Klamath River Basin (predominately Upper Klamath Lake and Clear Lake Reservoir). The data includes detections for endangered...
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Note: this data release has been superseded by version 4.0, available here: https://doi.org/10.5066/P16KZHPV Data were collected as part of a long-term capture-recapture program to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon and Clear Lake Reservoir, California. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrations in each year since 1995. PIT tagged species were encountered in netting efforts, remote transceivers, and active scanning on bird colonies across the Upper Klamath River...
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Data in this data set include effort expended to collect suckers for cohort tracking and metrics and observations for each sucker captured from 2015 through 2022. There are two levels of data. All Nets data contains 5102 records and the data file is 609 KB. Captures data contains 3764 records and the data file is 504 KB. The data files can be linked by setID which is a unique identifier for a unique net set. Data files are CSV files that are comma delimited.
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Bathymetric data were collected over all boatable areas of Upper Klamath and Agency Lakes, located in South-Central Oregon, in May and June of 1996. Areas that were too shallow (less than 1.2m) and/or covered with aquatic vegetation were not mapped. A 21ft tunnel-hull boat was fitted with an adjustable transducer mount on the stern. The transducer was mounted on the starboard side of the prop to minimize prop noise interference. A global positioning system (GPS) "rover" receiver's antennae mast was mounted directly above the transducer and connected to a Trimble 4000 GPS receiver. Differential correction updates were provided to the Trimble receiver at 1 second intervals from an OmniStar (John Chance Co., Houston,...
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This U.S. Geological Survey (USGS) Data Release provides phytoplankton data from Upper Klamath Lake, OR and Upper Klamath River, OR from 4/29 - 10/15/2019 from eight sites and zooplankton data from Upper Klamath Lake, OR from 4/16 - 10/15/2019 from three sites. Phytoplankton data are reported to the lowest possible taxonomic level and biovolume, biomass, and density are reported. Zooplankton data are reported to the lowest possible taxonomic level, animal concentration and biomass are also reported.
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Passive integrated transponder (PIT) detections across the Upper Klamath River Basin were combined from all fish that were detected making a passage attempt at the Link River Dam fish ladder from 2008 - 2024. In July 2007, four PIT tag antennas (FS1001 Muliplexer transceiver [MUX] units) arrays which were originally installed by Biomark. In October 2023, antennas were upgraded to Biomark IS1001 Master Controller units. Detections include the following species: Lost River suckers (Deltistes luxatus), shortnose suckers (Chasmistes brevirostris), redband or rainbow trout (Oncorhynchus mykiss), and Chinook salmon (Oncorhynchus tshawytscha). Data summaries quanitfy successful passage and speed for fish that traversed...
This U.S. Geological Survey (USGS) Data Release provides phytoplankton data from Upper Klamath Lake, OR from 5/11/2020 - 9/30/2020 from ten sites and zooplankton data from Upper Klamath Lake, OR from 5/11/2020 - 10/14/2020 from eight sites. Phytoplankton data are reported to the lowest possible taxonomic level and biovolume, biomass, and density are reported. Zooplankton data are reported to the lowest possible taxonomic level, biomass and density are also reported.
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Note: this data release has been superseded by version 2.0, available here: https://doi.org/10.5066/P9L1GPKI Data were collected as part of a long-term capture-recapture program to assess the status and dynamics of populations of two long-lived, federally endangered catostomids in Upper Klamath Lake, Oregon and Clear Lake Reservoir, California. Lost River suckers (LRS; Deltistes luxatus) and shortnose suckers (SNS; Chasmistes brevirostris) have been captured and tagged with passive integrated transponder (PIT) tags during their spawning migrations in each year since 1995.PIT tagged species were encountered in netting efforts, remote transceivers, and active scanning on bird colonies across the Upper Klamath River...


map background search result map search result map Datasets of High-throughput DNA Sequencing, Genetic Fingerprinting, and Quantitative PCR from Upper Klamath Lake, Oregon, 2013-14 Data for Trap Net Captured Juvenile Lost River and Shortnose Suckers from Upper Klamath Lake, Oregon Upper Klamath and Agency Lakes May/June 1996 bathymetric mapping project Data from laboratory and field tests of an economical, environmentally sealed, self-contained pCO2 sensor for environmental studies Depth-to-water data and calculated vertical hydraulic gradient at the sediment-water interface in Upper Klamath Lake, Oregon, 2017 Discrete groundwater and lake depth-to-water check-measurement data, Upper Klamath Lake, Oregon, 2017 Continuous depth-to-water data and calculated vertical hydraulic gradient at the sediment-water interface in Upper Klamath Lake, Oregon, 2017 Assessing the impact of irrigation curtailment using Landsat satellite data: A case study in the Upper Klamath Lake basin Phytoplankton and Zooplankton Data for Upper Klamath Lake and River, Oregon, 2019 Phytoplankton Data for Upper Klamath Lake, Oregon, 2010-2018 Phytoplankton and Zooplankton Data for Upper Klamath Lake, Oregon, 2020 Dissolved arsenic, copper, and lead concentrations in surface water within the Klamath Basin (ver. 4.0, April 2023) PIT Tags Encountered by Klamath Falls Field Station Equipment in the Upper Klamath Basin Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2023 Input and results from boosted regression tree and artificial neural network models that predict daily maximum pH and daily minimum dissolved oxygen in Upper Klamath Lake, 2005-2019 Upper Klamath Lake and Clear Lake sampling for suckers from 2015 through 2022 PIT Tags Encountered by Klamath Falls Field Station Equipment in the Upper Klamath Basin 1993-2024 (ver. 3.0, April 2024) PIT Tags Encountered by Klamath Falls Field Station Equipment in the Upper Klamath Basin 1993-2024 (ver. 4.0, August 2024) Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2024 (ver. 2.0, October 2024) Analysis of fish PIT tag detections from 2008-2024 at the Link River Dam fish ladder in the Upper Klamath River Basin, Oregon Depth-to-water data and calculated vertical hydraulic gradient at the sediment-water interface in Upper Klamath Lake, Oregon, 2017 Discrete groundwater and lake depth-to-water check-measurement data, Upper Klamath Lake, Oregon, 2017 Continuous depth-to-water data and calculated vertical hydraulic gradient at the sediment-water interface in Upper Klamath Lake, Oregon, 2017 Datasets of High-throughput DNA Sequencing, Genetic Fingerprinting, and Quantitative PCR from Upper Klamath Lake, Oregon, 2013-14 Upper Klamath and Agency Lakes May/June 1996 bathymetric mapping project Phytoplankton Data for Upper Klamath Lake, Oregon, 2010-2018 Input and results from boosted regression tree and artificial neural network models that predict daily maximum pH and daily minimum dissolved oxygen in Upper Klamath Lake, 2005-2019 Phytoplankton and Zooplankton Data for Upper Klamath Lake and River, Oregon, 2019 Data for Trap Net Captured Juvenile Lost River and Shortnose Suckers from Upper Klamath Lake, Oregon Phytoplankton and Zooplankton Data for Upper Klamath Lake, Oregon, 2020 Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2023 Status and trends of adult Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) sucker populations in Upper Klamath Lake, Oregon, 2024 (ver. 2.0, October 2024) Analysis of fish PIT tag detections from 2008-2024 at the Link River Dam fish ladder in the Upper Klamath River Basin, Oregon Upper Klamath Lake and Clear Lake sampling for suckers from 2015 through 2022 Dissolved arsenic, copper, and lead concentrations in surface water within the Klamath Basin (ver. 4.0, April 2023) PIT Tags Encountered by Klamath Falls Field Station Equipment in the Upper Klamath Basin PIT Tags Encountered by Klamath Falls Field Station Equipment in the Upper Klamath Basin 1993-2024 (ver. 3.0, April 2024) PIT Tags Encountered by Klamath Falls Field Station Equipment in the Upper Klamath Basin 1993-2024 (ver. 4.0, August 2024) Assessing the impact of irrigation curtailment using Landsat satellite data: A case study in the Upper Klamath Lake basin Data from laboratory and field tests of an economical, environmentally sealed, self-contained pCO2 sensor for environmental studies