This data package was created 2024-03-12 06:32:27 by NPSTORET and includes selected project, location, and result data. Data contained in the Niobrara National Scenic River NPSTORET back-end file (NIOB_NPSTORET_BE_20231113_20231115_1341.ACCDB) were filtered to include: Organization: - NIOB: Niobrara National Scenic River Project: - NIOB0001: Niobrara River Water Quality & Streamflow Monitoring Program Station: - Include Trip QC And All Station Visit Results Value Status: - Accepted or Certified (exported as Final) or Final The data package is organized into four data tables: - Projects.csv - describes the purpose and background of the monitoring efforts - Locations.csv - documents the attributes of the monitoring locations/stations - Results.csv - contains the field measurements, observations, and/or lab analyses for each sample/event/data grouping - HUC12.csv - enumerates the domain of allowed values for 12-digit hydrologic unit codes utilized by the Locations datatable Period of record for filtered data is 2001-12-19 to 2023-10-06. This data package is a snapshot in time of one National Park Service project. The most current data for this project, which may be more or less extensive than that in this data package, can be found on the Water Quality Portal at: https://www.waterqualitydata.us/data/Result/search?project=NIOB0001

USGS collects streamflow, dissolved oxygen, pH, specific conductance, and water temperature for the Northern Great Plains Network on a 3 year rotation during the ice free season. Provisional and final data can be accessed from the NWIS external link for 2014, 2017, and 2020. A copy of the certified data from 2020 is linked to this record.

USGS collects streamflow, dissolved oxygen, pH, specific conductance, and water temperature for the Northern Great Plains Network on a 3 year rotation during the ice free season. Provisional and final data can be accessed from the NWIS external link for 2014, 2017, and 2020. A copy of the certified data from 2020 is linked to this record.

Discharge and suspended sediment data were collected from October 2016 to Febuary 2017 at the NR0 site. Data was collected immediately down stream of Old Pacific Hwy SE bridge during a bridge measurement and approximately 100 meters below bridge for a boat measurement. Data collection from the bridge has been ongoing since 1968 but data collection from a boat was first attempted October 21, 2016 during this data collection series. Suspended sediment sample and discrete discharge data at this site are available at: https://waterdata.usgs.gov/wa/nwis/inventory/?site_no=12090240&agency_cd=USGS&. A summary of suspended-sediment sample data are provided with this data release in the file NR0_SSC_summary.csv.

Discharge and suspended sediment data were collected from October 2016 to Febuary 2017 at the NR0 site. Data was collected immediately down stream of Old Pacific Hwy SE bridge during a bridge measurement and approximately 100 meters below bridge for a boat measurement. Data collection from the bridge has been ongoing since 1968 but data collection from a boat was first attempted October 21, 2016 during this data collection series. Suspended sediment sample and discrete discharge data at this site are available at: https://waterdata.usgs.gov/wa/nwis/inventory/?site_no=12090240&agency_cd=USGS&. A summary of suspended-sediment sample data are provided with this data release in the file NR0_SSC_summary.csv.

Multiple sensors for measuring stage (water level), water temperature, specific conductivity, turbidity and water velocity were installed at site NR2 (N 47d 04' 46.1"/W 122d 42' 30.2"), located approximately 3.1 km upstream from the mouth of the Nisqually River and within the tidal prism. The sensors were connected to a cell-phone telemetered, data collection platform (DCP) used to program and power each sensor as well as synchronize the timing of 15-minute measurement intervals. A vented conductivity, temperature and depth sensor (CTD, InSitu Aqua Troll) measured water temperature, water depth, specific conductance, and salinity from May 11, 2016 to August 3, 2016 (85 days) and from September 8, 2016 to March 16, 2017 (190 days). Water temperature measurements ranged from 1.8 to 19.9 degrees C. Water depth of the the sensor ranged from 0.08 to 4.73 meters. Water surface elevation (NAVD88) was surveyed with RTN-GPS at the same time as water level was measured and recorded by sensors and was used to determine an offset (-0.44 m) for converting water depth to water surface elevation (NAVD88). Specific conductance measurements ranged from 48 to 43,217 microSiemens per centimeter (uS/cm) and salinity ranged from 0 to 27.81 practical salinity units (PSU). Data gaps of 15-minutes or more were reported an “NA”. Missing data from May 24, 2016 to June 1, 2016 was the result of DCP failure. The deployment pipe was hit by debris on March 16,2017 which ended the deployment. An acoustic Doppler velocity meter (ADVM, SonTek-SL 500) measured water temperature, stream velocity and signal-to-noise ratio (SNR) from May 11, 2016 to August 3, 2016 (85 days) and from September 8, 2016 to March 16, 2017 (190 days). Water temperature measurements ranged from 2.0 to 19.7 degrees C. Due to hardware mounting constraints at the channel edge, the ADVM was deployed at an oblique angle relative to the primary direction of flow and x-y components of stream velocity were measured relative to the sensor housing. The x-component of stream velocity (Vx) ranged from -0.70 to 1.68 m/s and the y-direction component (Vy) ranged from -0.47 to 1.12 m/s. The stream velocity magnitude (Vmag) is the sum of Vx and Vy vector components and ranged from -0.77 to 2.02 m/s, where positive values indicate flow in the downstream direction and negative values indicate flow in the upstream direction as a result of flood tide conditions. Signal to noise ratio ranged from 0.6 to 76.3 dB. Data gaps of 15-minutes or more were reported as “NA”. Missing data from May 24, 2016 to June 1, 2016 was the result of DCP failure. Data gaps of 15-minutes or more were reported an “NA”. The data record ended on March 16, 2017 after a beam check indicated ADVM acoustic beam alignment changed due to debris strike. A digital turbidity sensor (DTS-12) measured turbidity and temperature from May 11, 2016 to August 4, 2016 (86 days) and from September 8, 2016 to September 18, 2017 (375 days). Turbidity ranged from 0.01 to 883.17 NTUs. Temperature ranged from 1.8 to 20.0 degrees C. This site is also referenced as "USGS 12090250 Nisqually River at Estuary Trail near Nisqually, WA". Suspended sediment sample and discrete discharge data at this site are available at: https://nwis.waterdata.usgs.gov/wa/nwis/inventory/?site_no=12090250&agency_cd=USGS. A summary of suspended-sediment sample data are provided with this data release in the file NR2_SSC_summary.csv.

Multiple sensors for measuring stage (water level), water temperature, specific conductivity, turbidity and water velocity were installed at site NR2 (N 47d 04' 46.1"/W 122d 42' 30.2"), located approximately 3.1 km upstream from the mouth of the Nisqually River and within the tidal prism. The sensors were connected to a cell-phone telemetered, data collection platform (DCP) used to program and power each sensor as well as synchronize the timing of 15-minute measurement intervals. A vented conductivity, temperature and depth sensor (CTD, InSitu Aqua Troll) measured water temperature, water depth, specific conductance, and salinity from May 11, 2016 to August 3, 2016 (85 days) and from September 8, 2016 to March 16, 2017 (190 days). Water temperature measurements ranged from 1.8 to 19.9 degrees C. Water depth of the the sensor ranged from 0.08 to 4.73 meters. Water surface elevation (NAVD88) was surveyed with RTN-GPS at the same time as water level was measured and recorded by sensors and was used to determine an offset (-0.44 m) for converting water depth to water surface elevation (NAVD88). Specific conductance measurements ranged from 48 to 43,217 microSiemens per centimeter (uS/cm) and salinity ranged from 0 to 27.81 practical salinity units (PSU). Data gaps of 15-minutes or more were reported an “NA”. Missing data from May 24, 2016 to June 1, 2016 was the result of DCP failure. The deployment pipe was hit by debris on March 16,2017 which ended the deployment. An acoustic Doppler velocity meter (ADVM, SonTek-SL 500) measured water temperature, stream velocity and signal-to-noise ratio (SNR) from May 11, 2016 to August 3, 2016 (85 days) and from September 8, 2016 to March 16, 2017 (190 days). Water temperature measurements ranged from 2.0 to 19.7 degrees C. Due to hardware mounting constraints at the channel edge, the ADVM was deployed at an oblique angle relative to the primary direction of flow and x-y components of stream velocity were measured relative to the sensor housing. The x-component of stream velocity (Vx) ranged from -0.70 to 1.68 m/s and the y-direction component (Vy) ranged from -0.47 to 1.12 m/s. The stream velocity magnitude (Vmag) is the sum of Vx and Vy vector components and ranged from -0.77 to 2.02 m/s, where positive values indicate flow in the downstream direction and negative values indicate flow in the upstream direction as a result of flood tide conditions. Signal to noise ratio ranged from 0.6 to 76.3 dB. Data gaps of 15-minutes or more were reported as “NA”. Missing data from May 24, 2016 to June 1, 2016 was the result of DCP failure. Data gaps of 15-minutes or more were reported an “NA”. The data record ended on March 16, 2017 after a beam check indicated ADVM acoustic beam alignment changed due to debris strike. A digital turbidity sensor (DTS-12) measured turbidity and temperature from May 11, 2016 to August 4, 2016 (86 days) and from September 8, 2016 to September 18, 2017 (375 days). Turbidity ranged from 0.01 to 883.17 NTUs. Temperature ranged from 1.8 to 20.0 degrees C. This site is also referenced as "USGS 12090250 Nisqually River at Estuary Trail near Nisqually, WA". Suspended sediment sample and discrete discharge data at this site are available at: https://nwis.waterdata.usgs.gov/wa/nwis/inventory/?site_no=12090250&agency_cd=USGS. A summary of suspended-sediment sample data are provided with this data release in the file NR2_SSC_summary.csv.

A vented conductivity, temperature and depth sensor (CTD, InSitu Aqua Troll) was installed at site NR1 (N 47d 04’ 16.1”/W 122d 42’ 15.5”) and continuously measured water temperature, water depth, specific conductance, and salinity at 15-minute intervals from February 11, 2016 to July 18, 2016 (159 days). The sensor was replaced with a vented water-level logger (InSitu Level Troll) on July 19, 2016 and deployed until March 19, 2018 (608 days). The site is tidally influenced and located approximately 4.1 km upstream from the mouth of the Nisqually River and within the tidal prism. The elevation (NAVD88) of the top of the deployment pipe was surveyed by RTN-GPS. Tape-down measurements from the top of the pipe to the water surface at the time of water depth measurements by the sensor were used to determine an offset for converting water depth to water surface elevation (NAVD88). The offset needed to convert all water depth time-series data to water surface elevation (NAVD88) is -0.26 meters. Water depth ranged from 1.38 to 4.50 m, water temperature ranged from 2.0 to 20.0 degrees C, specific conductance ranged from 54 to 12,200 (uS/cm), and salinity ranged from 0.0 to 7.0 practical salinity units (PSU). Data gaps of 15-minutes or more were reported as “NA”. Missing Level Troll data occurred from 10/07/2016 to 11/22/2016 and 11/29/2016 to 12/14/2016 and was the result of communication errors with the sensor. This site is also referenced as "USGS 12090248 Nisqually River at I5 near Nisqually, WA". Suspended sediment sample and discrete discharge data at this site are available at: https://waterdata.usgs.gov/wa/nwis/inventory/?site_no=12090248&agency_cd=USGS&. A summary of suspended-sediment sample data are provided with this data release in the file NR1_SSC_summary.csv.

A vented conductivity, temperature and depth sensor (CTD, InSitu Aqua Troll) was installed at site NR1 (N 47d 04’ 16.1”/W 122d 42’ 15.5”) and continuously measured water temperature, water depth, specific conductance, and salinity at 15-minute intervals from February 11, 2016 to July 18, 2016 (159 days). The sensor was replaced with a vented water-level logger (InSitu Level Troll) on July 19, 2016 and deployed until March 19, 2018 (608 days). The site is tidally influenced and located approximately 4.1 km upstream from the mouth of the Nisqually River and within the tidal prism. The elevation (NAVD88) of the top of the deployment pipe was surveyed by RTN-GPS. Tape-down measurements from the top of the pipe to the water surface at the time of water depth measurements by the sensor were used to determine an offset for converting water depth to water surface elevation (NAVD88). The offset needed to convert all water depth time-series data to water surface elevation (NAVD88) is -0.26 meters. Water depth ranged from 1.38 to 4.50 m, water temperature ranged from 2.0 to 20.0 degrees C, specific conductance ranged from 54 to 12,200 (uS/cm), and salinity ranged from 0.0 to 7.0 practical salinity units (PSU). Data gaps of 15-minutes or more were reported as “NA”. Missing Level Troll data occurred from 10/07/2016 to 11/22/2016 and 11/29/2016 to 12/14/2016 and was the result of communication errors with the sensor. This site is also referenced as "USGS 12090248 Nisqually River at I5 near Nisqually, WA". Suspended sediment sample and discrete discharge data at this site are available at: https://waterdata.usgs.gov/wa/nwis/inventory/?site_no=12090248&agency_cd=USGS&. A summary of suspended-sediment sample data are provided with this data release in the file NR1_SSC_summary.csv.

A vented conductivity, temperature and depth sensor (CTD, InSitu Aqua Troll) was installed at site NR3 (N 47o 05’ 12”/W 122o 42’ 22”) and continuously measured water level, water temperature, specific conductance, and salinity at 15-minute intervals from February 12, 2016 to August 7, 2016 (177 days) and from October 7, 2016 to February 8, 2017 (124 days). This site is tidally influenced and located approximately 2.2 km upstream from the mouth of the Nisqually River. Elevation (NAVD88) of the deployment pipe was surveyed by RTN-GPS. Elevation of pipe plus distance to sensor is included in the offset. The offset needed to convert water depth to NAVD88 water surface elevation is -0.31 meters. . Water depth of the sensor ranged from 0.04 to 4.23 m. Temperature ranged from 2.1 to 20.5 C. Specific conductance ranged from 13 to 45,030 microSiemens per centimeter (uS/cm). Salinity ranged from 0.0 to 29.1 practical salinity units (PSU). Water level in the river dropped below the elevation of the sensor during periods of low river flow coincident with low tide. Data gaps of 15-minutes or more were reported as “NA”. Missing data occurred from 01/23/2017 to 01/26/2017 and was the result of vandalism to the sensor cable. NWIS site ID is 12090255 Nisqually River near Nisqually NWR at Nisqually, WA.