David C. Moeser Jake C. Kurzweil William R. McDermott Tyler D. Lampard 20240910 tabular digital data https://doi.org/10.5066/P1EAGT6Y These data include snow depth and snow water equivalent (SWE) for a field campaign on April 9, 2024. The field area is comprised of 311 surveyed points in, on the perimeter of, and surrounding six forest openings next to Coal Creek off Coal Bank Pass in the San Juan Mountains in southwestern Colorado, USA. These measurements were taken to look at the relationship between snow accumulation and snow melt patterns between forest gaps of various sizes, and forest edges of various sizes (edge of forest gaps). Canopy metrics, including canopy height, total gap area, mean distance to canopy, canopy closure, leaf area index, non-directional edginess, canopy edginess with a southern aspect, and canopy edginess with a northern aspect were defined using aerial lidar data for the San Juan Mountains and can be found in an affiliated data release titled, ‘High Resolution Canopy Structure and Density Metrics for Southwest Colorado Derived from 2019 Aerial Lidar.’ These metrics are also included herein for the 311 surveyed points. These measurements were taken to look at the relationship between snow accumulation and snow melt patterns between forest gaps of various sizes, and forest edges of various sizes (edge of forest gaps). 20240409 ground condition Complete None planned -107.765923 -107.756824 37.704060 37.697812 ISO 19115 Topic Category environment None snow depth snow water equivalent canopy structure canopy density USGS Thesaurus precipitation (atmospheric) USGS Metadata Identifier USGS:66b164fed34e5d7d928b1190 None Southwest Colorado San Juan Mountains 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. David Moeser USGS New Mexico Water Science Center hydrologist mailing

6700 Edith Blvd NE

Albuquerque NM 87113 7753576668 This work was funded by the U.S. Geological Survey (USGS) South Central Climate Adaptation Science Center. Additional funding support for this research was provided by the USGS Next Generation Water Observing System (NGWOS) Program and the Colorado Department of Transportation. David Moeser Graham A. Sexstone 20230530 raster digital data https://doi.org/10.5066/P9ESQIAV William R Mcdermott Graham A Sexstone Colin A Penn Tyler D Lampard Duncan B Morel Jon M Gholson Joel W Homan Evan J Gohring Garrett A Akie Andrea L Creighton Erin K Hennessy Nicholas G Hall 2023 dataset https://www.sciencebase.gov U.S. Geological Survey https://doi.org/10.5066/p9nu5pv8 Mark A Bauer Matthew A Burgess Josip D Adams Graham A Sexstone John W Fulton William R Mcdermott Lance R Brady 2023 dataset https://www.sciencebase.gov U.S. Geological Survey https://doi.org/10.5066/p9lf15ae No formal attribute accuracy tests were conducted. Measurement locations were surveyed in before measurement. Data were checked for duplication, omission, and logical consistency. All values fall within expected ranges. This data set is considered complete. Users are advised to read carefully the metadata record for additional details. Moeser 2020 publication n/a Zenodo https://doi.org/10.5281/zenodo.4088667 Digital and/or Hardcopy 2020 publication date Lidar2CanopyMetrics Canopy metrics used to determine canopy attributes of measuring locations. Snow depth was measured at each of the 311 surveyed points on April 9, 2024 using a graticulated snow probe. Snow Water Equivalent (SWE) was measured using a Mount Rose Federal Sampler on the south facing canopy edges of the forest openings, north facing canopy edges of the forest openings, and in the middle of each of the 6 forest openings as well as one SWE measurement in the forested environment for a total of 19 SWE measurements for the field campaign. The snow density from the SWE measurements was then used to distribute to each of the 311 snow depth measurements for estimates of SWE at all 311 points. The north facing edge snow density measurements were distributed to the north facing edge snow depth measurements. The south facing edge snow density measurements were distributed to the south facing edge snow depth measurements. The forest opening snow density measurements were distributed to the forest opening snow depth measurements. Finally, the forest snow density measurement was distributed to the forest snow depth measurements. Lidar2CanopyMetrics 20240409 David Moeser USGS - New Mexico Water Science Center Hydrologist mailing

6700 Edith Blvd NE

Albuquerque NM 87113 7753576668 cmoeser@usgs.gov Universal Transverse Mercator 13 coordinate pair 0.001 0.001 meters april_09_2024.txt Tab delimited text file. Producer Defined point_id Name of Field Measurement point Producer Defined Producer defined value for Name of Field Measurement Point. northing UTM Northing Producer Defined 4176200.00 4176600.00 meter 1 easting UTM Easting Producer Defined 256490.00 256950.00 meter 1 non_directional_edginess canopy edginess Producer Defined 0.0 1.285 none edginess_south canopy edginess with a southern aspect Producer Defined 0.0 1.0 none edginess_north canopy edginess with a northern aspect Producer Defined 0.0 1.0 none canopy_closure canopy closure Producer Defined 0.016587 0.94671 none lai leaf area index Producer Defined 1.1089 4.5651 none canopy_height_m canopy height Producer Defined 0.0087891 24.83 meter 0.01 total_gap_area_m2 total gap area Producer Defined 4 6631.6 square meter mean_dist_canopy_m mean distance to canopy Producer Defined 1.2071 42.389 meter 0.01 SD_cm snow depth Producer Defined 20 135 centimeter 1 SWE_cm Snow Water Equivalent Producer Defined 8.52781489 53.42727401 centimeter 1 Density_g/c3 Snow Density Producer Defined 0.293735846 0.426390744 grams per cubic centimeter 0.01 dates Measurement date (YYYY-MM-DD) Producer Defined Date of data collection. GS ScienceBase U.S. Geological Survey mailing address

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 United States 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/P1EAGT6Y None 20240910 David Moeser USGS - New Mexico Water Science Center Hydrologist mailing

6700 Edith Blvd NE

Albuquerque NM 87113 7753576668 cmoeser@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998