#------------------------------------------------- WARNING -------------------------------------------- # # The data you have obtained from this automated Natural Resources Conservation Service # database are subject to revision regardless of indicated Quality Assurance level. # Data are released on condition that neither the NRCS nor the United States Government # may be held liable for any damages resulting from its use. # # SNOTEL air temperature data contains a known bias. This bias is rooted in the sensor # conversion equation and varies through the output range. Solutions are in development. # For more information go to Air Temperature Bias Correction. # # Help and Tutorials: https://www.nrcs.usda.gov/sites/default/files/2023-03/Report%20Generator%20Help%20Guide.pdf # Air Temperature Bias Correction: https://www.nrcs.usda.gov/wps/portal/wcc/home/snowClimateMonitoring/temperature/temperatureBiasCorrection/ # # Support Contact: usdafpacbc@servicenowservices.com # #------------------------------------------------------------------------------------------------------ # # Reporting Frequency: Daily # Date Range: 2025-10-01 to 2026-09-30 # Report Instantaneous Data As: Start of Day # # Data for the following site(s) are contained in this file: # # SNOTEL 840: Upper San Juan, CO # # Data items provided in this file: # # Element Name Value Type Function Type Function Duration Base Data Measurement Units Sensor Depth Element Code Description # Snow Water Equivalent Value None Instantaneous - Start of Day N/A Inches N/A WTEQ Depth of water that would theoretically result if the entire snowpack were melted instantaneously # Snow Water Equivalent Median (1981-2010) None Instantaneous - Start of Day N/A Inches N/A WTEQ Depth of water that would theoretically result if the entire snowpack were melted instantaneously # Precipitation Accumulation Value None Instantaneous - Start of Day N/A Inches N/A PREC Water year accumulated precipitation # Precipitation Accumulation Average (1981-2010) None Instantaneous - Start of Day N/A Inches N/A PREC Water year accumulated precipitation # # Quality Control flags included: # # Flag Name Description # V Valid Validated Data # N No Profile No profile for automated validation # E Edit Edit, minor adjustment for sensor noise # K Estimate Estimate # C Correction A different equation has been applied to the original sensor voltage # B Back Estimate Regression-based estimate for homogenizing collocated Snow Course and Snow Pillow data sets # X External Estimate External estimate # S Suspect Suspect data # M Missing Value is missing # # Quality Assurance flags included: # # Flag Name Description # U Unknown Unknown # R Raw No Human Review # P Provisional Preliminary Human Review # A Approved Processing and Final Review Completed # #------------------------------------------------------------------------------------------------------ # # Upper San Juan (840) Colorado SNOTEL Site - 10140 ft # Reporting Frequency: Daily; Date Range: 2025-10-01 to 2026-09-30 # # As of: Apr 22, 2026, 6:56:14 PM GMT-08:00 # Date,Snow Water Equivalent (in) Start of Day Values,Median Snow Water Equivalent (1981-2010) (in) Start of Day Values,Precipitation Accumulation (in) Start of Day Values,Average Precipitation Accumulation (1981-2010) (in) Start of Day Values 2025-10-01,0.0,0.0,0.00,0.00 2025-10-02,0.0,0.0,0.00,0.13 2025-10-03,0.0,0.0,0.00,0.32 2025-10-04,0.0,0.0,0.40,0.51 2025-10-05,0.0,0.0,1.10,0.75 2025-10-06,0.0,0.0,1.10,0.87 2025-10-07,0.0,0.0,1.10,0.99 2025-10-08,0.0,0.0,1.10,1.21 2025-10-09,0.0,0.0,1.20,1.30 2025-10-10,0.0,0.0,1.30,1.43 2025-10-11,0.0,0.0,3.50,1.59 2025-10-12,0.0,0.0,7.40,1.90 2025-10-13,0.0,0.0,7.60,2.00 2025-10-14,0.0,0.0,10.60,2.11 2025-10-15,0.0,0.0,11.30,2.32 2025-10-16,0.0,0.0,11.30,2.56 2025-10-17,0.0,0.0,11.30,2.72 2025-10-18,0.0,0.0,11.30,2.92 2025-10-19,0.0,0.0,11.30,2.98 2025-10-20,0.0,0.3,11.30,3.11 2025-10-21,0.0,0.3,11.30,3.19 2025-10-22,0.0,0.3,11.30,3.28 2025-10-23,0.0,0.3,11.30,3.34 2025-10-24,0.0,0.4,11.60,3.42 2025-10-25,0.2,0.5,11.80,3.58 2025-10-26,0.1,0.6,11.80,3.78 2025-10-27,0.0,0.7,11.80,4.00 2025-10-28,0.0,0.8,11.80,4.22 2025-10-29,0.0,0.9,11.80,4.47 2025-10-30,0.0,1.1,11.80,4.62 2025-10-31,0.0,1.3,11.80,4.85 2025-11-01,0.0,1.5,11.80,5.00 2025-11-02,0.0,1.7,11.80,5.26 2025-11-03,0.0,1.9,11.80,5.43 2025-11-04,0.0,2.1,11.80,5.56 2025-11-05,0.0,2.3,11.80,5.62 2025-11-06,0.0,2.5,11.80,5.69 2025-11-07,0.0,2.5,11.80,5.79 2025-11-08,0.0,2.5,11.80,5.90 2025-11-09,0.0,2.6,11.80,6.24 2025-11-10,0.0,2.8,11.80,6.41 2025-11-11,0.1,2.9,11.80,6.67 2025-11-12,0.1,3.0,11.80,7.02 2025-11-13,0.2,3.2,11.80,7.25 2025-11-14,0.3,3.3,11.80,7.47 2025-11-15,0.3,3.6,11.80,7.68 2025-11-16,0.4,3.8,11.80,7.85 2025-11-17,0.6,3.9,12.30,7.95 2025-11-18,1.1,4.2,12.90,8.10 2025-11-19,1.1,4.4,12.90,8.25 2025-11-20,1.3,4.6,13.10,8.33 2025-11-21,2.0,4.8,13.80,8.56 2025-11-22,2.0,5.1,13.80,8.65 2025-11-23,2.0,5.3,13.80,8.83 2025-11-24,2.7,5.6,14.60,8.96 2025-11-25,2.7,5.7,14.60,9.14 2025-11-26,2.7,5.9,14.60,9.48 2025-11-27,2.7,6.1,14.60,9.68 2025-11-28,2.7,6.2,14.60,9.82 2025-11-29,2.7,6.4,14.60,10.04 2025-11-30,2.7,6.6,14.60,10.41 2025-12-01,3.4,6.7,15.30,10.68 2025-12-02,3.4,6.9,15.30,10.86 2025-12-03,3.8,7.1,15.60,10.95 2025-12-04,4.4,7.4,16.30,11.08 2025-12-05,4.5,7.6,16.40,11.15 2025-12-06,4.5,7.7,16.40,11.31 2025-12-07,4.5,7.8,16.40,11.53 2025-12-08,4.5,7.9,16.40,11.87 2025-12-09,4.6,8.0,16.40,12.15 2025-12-10,4.7,8.1,16.50,12.23 2025-12-11,4.7,8.1,16.50,12.47 2025-12-12,4.7,8.2,16.50,12.66 2025-12-13,4.7,8.2,16.50,12.84 2025-12-14,4.7,8.2,16.50,13.13 2025-12-15,4.7,8.4,16.50,13.21 2025-12-16,4.7,8.6,16.50,13.34 2025-12-17,4.7,8.9,16.50,13.48 2025-12-18,4.7,9.2,16.50,13.65 2025-12-19,4.7,9.6,16.50,13.82 2025-12-20,4.7,10.0,16.50,14.02 2025-12-21,4.7,10.4,16.50,14.19 2025-12-22,4.7,10.8,16.50,14.32 2025-12-23,4.7,11.0,16.60,14.55 2025-12-24,4.7,11.3,16.60,14.76 2025-12-25,4.9,11.5,16.80,14.87 2025-12-26,5.1,11.7,17.70,15.09 2025-12-27,5.2,12.0,17.70,15.26 2025-12-28,5.8,12.3,18.00,15.43 2025-12-29,5.8,12.7,18.00,15.67 2025-12-30,5.8,13.0,18.10,15.87 2025-12-31,5.8,13.4,18.20,16.02 2026-01-01,5.8,13.8,18.20,16.17 2026-01-02,5.8,14.4,18.50,16.28 2026-01-03,6.4,14.8,19.00,16.54 2026-01-04,6.5,15.3,19.00,16.75 2026-01-05,6.5,15.6,19.00,17.12 2026-01-06,6.6,16.0,19.10,17.58 2026-01-07,6.6,16.3,19.10,17.75 2026-01-08,6.7,16.5,19.20,17.95 2026-01-09,7.0,16.5,19.70,18.14 2026-01-10,7.0,16.5,19.70,18.23 2026-01-11,7.0,16.4,19.70,18.37 2026-01-12,7.0,16.3,19.70,18.67 2026-01-13,7.0,16.3,19.70,18.89 2026-01-14,7.0,16.3,19.70,19.07 2026-01-15,7.0,16.3,19.70,19.19 2026-01-16,7.0,16.3,19.70,19.31 2026-01-17,7.0,16.3,19.70,19.45 2026-01-18,7.0,16.4,19.70,19.63 2026-01-19,7.0,16.6,19.70,19.77 2026-01-20,7.0,16.9,19.70,19.94 2026-01-21,7.0,17.3,19.70,20.06 2026-01-22,7.0,17.6,19.70,20.22 2026-01-23,7.0,18.0,19.70,20.34 2026-01-24,7.5,18.4,20.20,20.40 2026-01-25,8.0,18.7,20.80,20.51 2026-01-26,8.0,19.0,20.80,20.72 2026-01-27,8.0,19.1,20.80,20.93 2026-01-28,8.0,19.2,20.80,21.20 2026-01-29,8.0,19.3,20.80,21.42 2026-01-30,8.0,19.4,20.80,21.50 2026-01-31,8.0,19.4,20.80,21.61 2026-02-01,8.0,19.5,20.80,21.84 2026-02-02,8.0,19.5,20.80,22.02 2026-02-03,8.0,19.5,20.80,22.19 2026-02-04,8.0,19.5,20.80,22.39 2026-02-05,8.0,19.6,20.80,22.70 2026-02-06,8.0,19.7,20.90,22.82 2026-02-07,8.0,19.9,20.90,22.88 2026-02-08,8.0,20.1,20.90,23.09 2026-02-09,8.0,20.2,20.90,23.40 2026-02-10,8.0,20.5,20.90,23.67 2026-02-11,8.0,20.8,20.90,23.87 2026-02-12,8.1,21.2,21.10,24.00 2026-02-13,8.3,21.5,21.30,24.17 2026-02-14,9.0,21.8,21.90,24.43 2026-02-15,9.1,22.1,22.00,24.71 2026-02-16,9.2,22.5,22.00,24.90 2026-02-17,9.2,22.8,22.00,25.17 2026-02-18,9.5,23.2,22.60,25.38 2026-02-19,11.3,23.5,24.30,25.63 2026-02-20,11.7,23.9,24.60,25.94 2026-02-21,13.0,24.2,25.80,26.22 2026-02-22,13.2,24.5,25.90,26.41 2026-02-23,13.2,24.8,25.90,26.54 2026-02-24,13.2,25.1,25.90,26.66 2026-02-25,13.2,25.3,25.90,26.93 2026-02-26,13.1,25.5,25.90,27.24 2026-02-27,13.0,25.7,25.90,27.41 2026-02-28,12.7,25.8,25.90,27.56 2026-03-01,12.6,26.0,25.90,27.85 2026-03-02,12.5,26.1,25.90,28.05 2026-03-03,12.5,26.1,25.90,28.28 2026-03-04,12.5,26.2,25.90,28.42 2026-03-05,12.5,26.3,25.90,28.69 2026-03-06,12.8,26.5,25.90,28.94 2026-03-07,13.4,26.7,26.60,29.16 2026-03-08,13.4,27.0,26.60,29.30 2026-03-09,13.4,27.2,26.60,29.54 2026-03-10,13.4,27.4,26.60,29.72 2026-03-11,13.4,27.7,26.60,29.94 2026-03-12,13.4,27.8,26.60,30.21 2026-03-13,13.3,28.0,26.60,30.39 2026-03-14,13.3,28.2,26.60,30.59 2026-03-15,13.2,28.4,26.60,30.73 2026-03-16,13.1,28.5,26.60,30.89 2026-03-17,13.0,28.5,26.60,31.04 2026-03-18,12.9,28.6,26.60,31.25 2026-03-19,12.5,28.9,26.60,31.38 2026-03-20,11.5,29.0,26.60,31.53 2026-03-21,10.4,29.2,26.60,31.67 2026-03-22,9.3,29.3,26.60,31.84 2026-03-23,8.4,29.6,26.60,32.02 2026-03-24,7.9,29.9,26.60,32.11 2026-03-25,6.8,30.2,26.60,32.21 2026-03-26,5.7,30.6,26.60,32.34 2026-03-27,4.7,30.8,26.60,32.52 2026-03-28,4.0,31.0,26.60,32.86 2026-03-29,3.2,31.2,26.60,33.19 2026-03-30,2.3,31.3,26.60,33.51 2026-03-31,1.4,31.5,26.60,33.69 2026-04-01,1.7,31.6,26.80,33.79 2026-04-02,4.2,31.7,29.60,34.04 2026-04-03,4.2,31.8,29.60,34.24 2026-04-04,4.0,31.9,29.60,34.41 2026-04-05,3.9,32.0,29.60,34.62 2026-04-06,3.8,32.2,29.60,34.74 2026-04-07,3.6,32.3,29.60,34.93 2026-04-08,3.4,32.3,29.60,35.05 2026-04-09,3.0,32.3,29.60,35.18 2026-04-10,2.6,32.3,29.70,35.33 2026-04-11,2.3,32.3,29.70,35.43 2026-04-12,2.1,32.3,29.80,35.54 2026-04-13,1.7,32.3,29.90,35.70 2026-04-14,1.8,32.2,30.30,35.80 2026-04-15,2.4,32.1,30.90,35.88 2026-04-16,2.2,31.9,30.90,35.98 2026-04-17,2.1,31.7,30.90,36.11 2026-04-18,1.9,31.4,30.90,36.22 2026-04-19,1.5,31.2,30.90,36.34 2026-04-20,0.7,31.0,30.90,36.44 2026-04-21,0.2,30.8,30.90,36.52 2026-04-22,0.0,30.6,30.90,36.70 2026-04-23,,30.3,,36.94 2026-04-24,,30.1,,37.07 2026-04-25,,29.9,,37.29 2026-04-26,,29.7,,37.47 2026-04-27,,29.6,,37.55 2026-04-28,,29.4,,37.62 2026-04-29,,29.3,,37.81 2026-04-30,,29.3,,37.93 2026-05-01,,29.3,,38.07 2026-05-02,,29.1,,38.23 2026-05-03,,28.9,,38.33 2026-05-04,,28.6,,38.46 2026-05-05,,28.2,,38.54 2026-05-06,,27.6,,38.67 2026-05-07,,26.9,,38.80 2026-05-08,,26.1,,38.93 2026-05-09,,25.5,,39.01 2026-05-10,,24.7,,39.10 2026-05-11,,24.0,,39.15 2026-05-12,,23.3,,39.16 2026-05-13,,22.5,,39.25 2026-05-14,,21.8,,39.30 2026-05-15,,21.0,,39.39 2026-05-16,,20.2,,39.52 2026-05-17,,19.3,,39.62 2026-05-18,,18.4,,39.67 2026-05-19,,17.5,,39.71 2026-05-20,,16.4,,39.76 2026-05-21,,15.3,,39.87 2026-05-22,,14.2,,39.97 2026-05-23,,13.1,,40.05 2026-05-24,,11.9,,40.14 2026-05-25,,10.7,,40.22 2026-05-26,,9.4,,40.31 2026-05-27,,8.1,,40.41 2026-05-28,,6.7,,40.45 2026-05-29,,5.2,,40.49 2026-05-30,,3.8,,40.58 2026-05-31,,2.2,,40.64 2026-06-01,,0.8,,40.68 2026-06-02,,0.0,,40.70 2026-06-03,,0.0,,40.72 2026-06-04,,0.0,,40.76 2026-06-05,,0.0,,40.79 2026-06-06,,0.0,,40.88 2026-06-07,,0.0,,40.92 2026-06-08,,0.0,,41.00 2026-06-09,,0.0,,41.05 2026-06-10,,0.0,,41.07 2026-06-11,,0.0,,41.13 2026-06-12,,0.0,,41.18 2026-06-13,,0.0,,41.20 2026-06-14,,0.0,,41.24 2026-06-15,,0.0,,41.27 2026-06-16,,0.0,,41.32 2026-06-17,,0.0,,41.36 2026-06-18,,0.0,,41.42 2026-06-19,,0.0,,41.43 2026-06-20,,0.0,,41.45 2026-06-21,,0.0,,41.48 2026-06-22,,0.0,,41.56 2026-06-23,,0.0,,41.57 2026-06-24,,0.0,,41.61 2026-06-25,,0.0,,41.63 2026-06-26,,0.0,,41.72 2026-06-27,,0.0,,41.83 2026-06-28,,0.0,,41.86 2026-06-29,,0.0,,41.94 2026-06-30,,0.0,,42.00 2026-07-01,,0.0,,42.14 2026-07-02,,0.0,,42.22 2026-07-03,,0.0,,42.26 2026-07-04,,0.0,,42.30 2026-07-05,,0.0,,42.32 2026-07-06,,0.0,,42.39 2026-07-07,,0.0,,42.41 2026-07-08,,0.0,,42.46 2026-07-09,,0.0,,42.57 2026-07-10,,0.0,,42.68 2026-07-11,,0.0,,42.74 2026-07-12,,0.0,,42.79 2026-07-13,,0.0,,42.86 2026-07-14,,0.0,,42.95 2026-07-15,,0.0,,43.03 2026-07-16,,0.0,,43.10 2026-07-17,,0.0,,43.17 2026-07-18,,0.0,,43.30 2026-07-19,,0.0,,43.37 2026-07-20,,0.0,,43.47 2026-07-21,,0.0,,43.56 2026-07-22,,0.0,,43.75 2026-07-23,,0.0,,43.83 2026-07-24,,0.0,,43.96 2026-07-25,,0.0,,44.05 2026-07-26,,0.0,,44.19 2026-07-27,,0.0,,44.31 2026-07-28,,0.0,,44.40 2026-07-29,,0.0,,44.53 2026-07-30,,0.0,,44.68 2026-07-31,,0.0,,44.81 2026-08-01,,0.0,,44.90 2026-08-02,,0.0,,45.13 2026-08-03,,0.0,,45.29 2026-08-04,,0.0,,45.43 2026-08-05,,0.0,,45.55 2026-08-06,,0.0,,45.71 2026-08-07,,0.0,,45.85 2026-08-08,,0.0,,45.95 2026-08-09,,0.0,,46.00 2026-08-10,,0.0,,46.08 2026-08-11,,0.0,,46.21 2026-08-12,,0.0,,46.37 2026-08-13,,0.0,,46.47 2026-08-14,,0.0,,46.61 2026-08-15,,0.0,,46.73 2026-08-16,,0.0,,46.84 2026-08-17,,0.0,,46.95 2026-08-18,,0.0,,47.03 2026-08-19,,0.0,,47.19 2026-08-20,,0.0,,47.27 2026-08-21,,0.0,,47.38 2026-08-22,,0.0,,47.50 2026-08-23,,0.0,,47.70 2026-08-24,,0.0,,47.88 2026-08-25,,0.0,,48.09 2026-08-26,,0.0,,48.16 2026-08-27,,0.0,,48.27 2026-08-28,,0.0,,48.38 2026-08-29,,0.0,,48.51 2026-08-30,,0.0,,48.69 2026-08-31,,0.0,,48.79 2026-09-01,,0.0,,48.99 2026-09-02,,0.0,,49.08 2026-09-03,,0.0,,49.17 2026-09-04,,0.0,,49.31 2026-09-05,,0.0,,49.43 2026-09-06,,0.0,,49.50 2026-09-07,,0.0,,49.61 2026-09-08,,0.0,,49.78 2026-09-09,,0.0,,49.88 2026-09-10,,0.0,,50.08 2026-09-11,,0.0,,50.21 2026-09-12,,0.0,,50.43 2026-09-13,,0.0,,50.58 2026-09-14,,0.0,,50.75 2026-09-15,,0.0,,50.92 2026-09-16,,0.0,,51.07 2026-09-17,,0.0,,51.13 2026-09-18,,0.0,,51.23 2026-09-19,,0.0,,51.48 2026-09-20,,0.0,,51.72 2026-09-21,,0.0,,51.96 2026-09-22,,0.0,,52.13 2026-09-23,,0.0,,52.28 2026-09-24,,0.0,,52.35 2026-09-25,,0.0,,52.40 2026-09-26,,0.0,,52.52 2026-09-27,,0.0,,52.56 2026-09-28,,0.0,,52.66 2026-09-29,,0.0,,52.80 2026-09-30,,0.0,,53.01