Zachary M. Shephard Stephanie A. Roussel Zoreya E. Ratigan Maximilliano Trujillo Stephanie Siemek 20250601 spreadsheet https://doi.org/10.5066/P13YWUNO The dataset shows the resulting bed hydraulic conductivity values of four sites within the Low Flow Conveyance Channel (LFCC), measured and calculated using a constant head permeameter test, and is comprised of one file. The data were collected in order to determine groundwater fluxes in the LFCC of the Rio Grande in the Bosque del Apache. The Low Flow Conveyance Channel (LFCC) is an artificial channel that was completed in 1953 to lower the water table to reduce evapotranspiration (ET) and salinization, and increase conveyance to downstream users. The LFCC is the lowest point in the valley, and it runs parallel to the Rio Grande from San Acacia, New Mexico to Elephant Butte Reservoir. The LFCC splits the Bosque del Apache Wildlife Refuge from north to south with irrigated units to the west of the LFCC and unirrigated riparian forests to the east. 20240422 ground condition Complete None planned -106.92518 -106.84799 33.87013 33.72526 ISO 19115 Topic Category biota environment inlandWaters geoscientificInformation USGS Thesaurus watershed management water use water resources water resource management water supply and demand water budget groundwater and surface-water interaction groundwater flow freshwater ecosystems groundwater Marine Realms Information Bank (MRIB) keywords groundwater inland waterways control of groundwater resources water resources watershed USGS Metadata Identifier USGS:6826118fd4be0211b775b4a9 Common geographic areas New Mexico Bosque del Apache National Wildlife Refuge Rio Grande aquifer system Rio Grande-Albuquerque National Wildlife Refuge FWS None. Please see 'Distribution Info' for details. None. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. Zoreya E Ratigan USGS - ROCKY MOUNTAIN REGION Hydrology Student mailing and physical

New Mexico WSC - Albuquerque Office,NMWSC-Edith Blvd

Albuquerque NM 87113 505-830-7900 zratigan@usgs.gov U.S. Fish and Wildlife Service Excel (February 2025 edition) Data are considered accurate. Constant head permeameter tests were replicated in the field. Tests performed in the same location but with differences in K value between them over 5% were not included in the average K value calculation for that site. Data are considered consistent. K values fall within expected ranges for coarse sand to silty sand. (Source: R Allan Freeze, and John A Cherry. 1979. Groundwater. Englewood Cliffs, N.J.: Prentice-Hall. (page 29)) Constant head permeameter readings were made on April 22, 2024 in the middle of the LFCC at staff plate monitoring locations. It was not possible to capture the complete spatial heterogeneity or temporal variability of channel bed seepage as part of this study. A standpipe, with area of 81 square centimeters, was inserted into the bed sediment material. The length inserted into the bed was then measured by subtracting the length from the surface of the bed to the top of the pipe from the total length of the pipe. 20240422 Stephanie A Roussel USGS - ROCKY MOUNTAIN REGION Hydrologist mailing and physical

New Mexico WSC - Albuquerque Office, NMWSC-Edith Blvd

Albuquerque NM 87113 505-830-7900 sroussel@usgs.gov Water was poured into the standpipe intermittently during the duration of the test, maintaining the water's height at a constant level (head). The volume of water (in ml) and the duration of the test's time (in seconds) were measured and recorded. 20240422 Stephanie A Roussel USGS - ROCKY MOUNTAIN REGION Hydrologist mailing and physical

New Mexico WSC - Albuquerque Office, NMWSC-Edith Blvd

Albuquerque NM 87113 505-830-7900 sroussel@usgs.gov Steps 1 and 2 were repeated, at least once and up to four times, at each of the four sites in the Low Flow Conveyance Channel. 20240422 Stephanie A Roussel USGS - ROCKY MOUNTAIN REGION Hydrologist mailing and physical

New Mexico WSC - Albuquerque Office, NMWSC-Edith Blvd

Albuquerque NM 87113 505-830-7900 sroussel@usgs.gov Bed hydraulic conductivity was calculated for each site, using the equation K=VL/Aht, where K is the bed hydraulic conductivity in cm/s, V is the volume of water poured into the standpipe in ml, L is the length of the inserted-into-bed-sediment portion of the standpipe in cm, A is the inside of the standpipe's cross-sectional area in square cm, h is the constant head (pour level) of water in the standpipe above the surface in cm, and t is the time that the test took to complete in seconds. For sites where multiple permeameter tests were successfully performed, the average of all calculated K values at that site was reported. 20240422 Zoreya E Ratigan USGS - ROCKY MOUNTAIN REGION Hydrology Student mailing and physical

New Mexico WSC - Albuquerque Office,NMWSC-Edith Blvd

Albuquerque NM 87113 505-830-7900 zratigan@usgs.gov Vector G-polygon 1 0.00001 0.00001 Decimal degrees WGS_1984 WGS 84 6378137.0 298.257223563 permeameter_measurement_sheet.csv Comma Separated Value (CSV) file containing channel bed seepage data. Producer Defined Site ID Sampling location. Producer Defined north staff Near NORTH STAFF Producer defined mid staff Mid-location Producer defined nawca south Southern location Producer defined south boundary Near SOUTH STAFF Producer defined Northing Northing in NAD83, in degrees, minutes, seconds Producer Defined degrees, minutes, seconds Easting Easting in NAD83, in degrees, minutes, seconds Producer Defined degrees, minutes, seconds run Numbers indicate sub-location, letters indicate trial iteration of permeameter test performed at each sub-location. Producer Defined 1a Sub-location 1; trial a Producer defined 2a Sub-location 2; trial a Producer defined 2b Sub-location 2; trial b Producer defined 2c Sub-location 2; trial c Producer defined 1b Sub-location 1; trial b Producer defined 1 Single location; 1 trial Producer defined Date Date tests were performed, in YYYY-MM-DD format. Producer Defined 2024-04-22 April 22, 2024 Producer defined Time The time the tests were performed, in Mountain Daylight Time. Producer Defined HH:MM V Volume of water poured into the standpipe, expressed in milliliters. Producer Defined 120 1000 ml 1 t (time (S)) Time that the permeameter test took to complete, expressed in seconds. Producer Defined 350 5988 seconds h (ft) The constant head (pour level) of water in the standpipe above the water surface, expressed in feet. Producer Defined 0.5 0.85 feet h (cm) The constant head (pour level) of water in the standpipe above the water surface, expressed in centimeters. This value, as opposed to the h value in feet, is the one used to calculate K. Producer Defined 15 26 centimeters L (ft) Length, in feet, of the inserted-into-bed-sediment portion of the standpipe. Calculated by taking the total pipe length and subtracting the length from the bed surface to the top of the pipe. Producer Defined 0.24 0.9 feet L (cm) Length, in centimeters, of the inserted-into-bed-sediment portion of the standpipe. Calculated by taking the total pipe length and subtracting the length from the bed surface to the top of the pipe. This value, as opposed to the L value in feet, is the one used to calculate K. Producer Defined 7.3 27.0 centimeters A (cm^2) The cross-sectional area of the inside of the standpipe, expressed in square centimeters. Producer Defined 81 81 square centimeters Used for Final K Calculation Quality flag. No if the measurement was not used to determine the average bed hydraulic conductivity in its respective location, yes if the measurement was used Producer Defined No Measurement was not used in calculating average K value at this location. Producer defined Yes Measurement was used in calculating average K value at this location. Producer defined K Value Calc Vertical bed hydraulic conductivity value calculated at this site, expressed in centimeters per second. Value calculated using the following equation: K = VL/Aht. V, L, A, h, and t. Producer Defined 0.00025 0.031 cm/s Averaged Final K (cm/s) Mean vertical bed conductance at a site. Producer Defined 0.00025 0.013 cm/s Averaged Final K (ft/s) Mean vertical bed conductance at a site. Producer Defined 8.1e-06 0.00043 ft/s Averaged Final K (m/s) Mean vertical bed conductance at a site. Producer Defined 2.5e-06 0.00013 m/s Channel bed hydraulic conductivity measurements. Ratigan, Z.E., Roussel, S.A., Shephard, Z.M., Lopez, L.M., Trujillo, M.O., Brinkerhoff, F.C., Revekant, C.L., Montoya, G., and Siemek, S.M., 2025, Channel bed conductivity, channel elevation, and evapotranspiration data at Bosque del Apache National Wildlife Refuge, New Mexico, 2022-2024: U.S. Geological Survey data release, https://doi.org/10.5066/P13YWUNO. U.S. Geological Survey - ScienceBase mailing address

Denver Federal Center

Building 810

Mail Stop 302

Denver CO 80225 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Digital Data https://doi.org/10.5066/P13YWUNO None 20260108 Zoreya E Ratigan USGS - ROCKY MOUNTAIN REGION Hydrology Student mailing and physical

New Mexico WSC - Albuquerque Office,NMWSC-Edith Blvd

Albuquerque NM 87113 505-830-7900 zratigan@usgs.gov FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata FGDC-STD-001.1-1999