#------------------------------------------------- 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: 2024-10-01 to 2025-09-30 # Report Instantaneous Data As: Start of Day # # Data for the following site(s) are contained in this file: # # SNOTEL 663: Niwot, 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 Depth Value None Instantaneous - Start of Day N/A Inches N/A SNWD Total snow depth # 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 # # 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 # #------------------------------------------------------------------------------------------------------ # # Niwot (663) Colorado SNOTEL Site - 9940 ft # Reporting Frequency: Daily; Date Range: 2024-10-01 to 2025-09-30 # # As of: Jul 13, 2025, 4:32:49 AM GMT-08:00 # Date,Snow Depth (in) Start of Day Values,Snow Water Equivalent (in) Start of Day Values 2024-10-01,0,0.0 2024-10-02,0,0.0 2024-10-03,0,0.0 2024-10-04,0,0.0 2024-10-05,0,0.0 2024-10-06,0,0.0 2024-10-07,0,0.0 2024-10-08,0,0.0 2024-10-09,0,0.0 2024-10-10,0,0.0 2024-10-11,0,0.0 2024-10-12,0,0.0 2024-10-13,0,0.0 2024-10-14,0,0.0 2024-10-15,0,0.0 2024-10-16,0,0.0 2024-10-17,0,0.0 2024-10-18,0,0.0 2024-10-19,0,0.0 2024-10-20,0,0.0 2024-10-21,0,0.0 2024-10-22,0,0.0 2024-10-23,0,0.0 2024-10-24,0,0.0 2024-10-25,0,0.0 2024-10-26,0,0.0 2024-10-27,0,0.0 2024-10-28,0,0.0 2024-10-29,0,0.0 2024-10-30,0,0.0 2024-10-31,1,0.2 2024-11-01,1,0.2 2024-11-02,1,0.2 2024-11-03,1,0.2 2024-11-04,8,0.9 2024-11-05,8,1.2 2024-11-06,11,1.4 2024-11-07,13,1.8 2024-11-08,15,2.0 2024-11-09,16,2.5 2024-11-10,14,2.7 2024-11-11,14,2.7 2024-11-12,12,2.6 2024-11-13,12,2.7 2024-11-14,11,2.7 2024-11-15,11,2.7 2024-11-16,11,2.6 2024-11-17,11,2.6 2024-11-18,11,2.6 2024-11-19,11,2.6 2024-11-20,11,2.7 2024-11-21,10,2.7 2024-11-22,10,2.7 2024-11-23,10,2.7 2024-11-24,10,2.6 2024-11-25,11,2.8 2024-11-26,11,2.8 2024-11-27,18,3.4 2024-11-28,21,3.8 2024-11-29,20,3.8 2024-11-30,18,3.8 2024-12-01,17,3.8 2024-12-02,16,3.8 2024-12-03,16,3.8 2024-12-04,16,3.8 2024-12-05,15,3.8 2024-12-06,15,3.8 2024-12-07,15,3.8 2024-12-08,15,3.8 2024-12-09,15,3.8 2024-12-10,15,3.8 2024-12-11,16,3.9 2024-12-12,15,3.9 2024-12-13,15,3.9 2024-12-14,15,3.9 2024-12-15,15,3.9 2024-12-16,15,3.9 2024-12-17,15,3.9 2024-12-18,20,4.3 2024-12-19,19,4.3 2024-12-20,18,4.3 2024-12-21,18,4.3 2024-12-22,17,4.3 2024-12-23,17,4.3 2024-12-24,16,4.3 2024-12-25,17,4.3 2024-12-26,18,4.4 2024-12-27,20,4.5 2024-12-28,21,4.7 2024-12-29,22,5.0 2024-12-30,25,5.3 2024-12-31,24,5.4 2025-01-01,23,5.4 2025-01-02,23,5.5 2025-01-03,29,5.9 2025-01-04,26,5.9 2025-01-05,25,5.9 2025-01-06,26,5.9 2025-01-07,24,6.0 2025-01-08,25,6.0 2025-01-09,25,6.0 2025-01-10,27,6.2 2025-01-11,26,6.3 2025-01-12,27,6.4 2025-01-13,26,6.4 2025-01-14,26,6.4 2025-01-15,26,6.4 2025-01-16,25,6.4 2025-01-17,25,6.4 2025-01-18,33,6.8 2025-01-19,33,7.2 2025-01-20,32,7.3 2025-01-21,32,7.4 2025-01-22,31,7.4 2025-01-23,31,7.4 2025-01-24,30,7.5 2025-01-25,33,7.7 2025-01-26,35,8.0 2025-01-27,35,8.2 2025-01-28,34,8.2 2025-01-29,34,8.2 2025-01-30,33,8.2 2025-01-31,33,8.2 2025-02-01,32,8.1 2025-02-02,32,8.4 2025-02-03,34,8.6 2025-02-04,34,8.6 2025-02-05,33,8.6 2025-02-06,33,8.6 2025-02-07,33,8.6 2025-02-08,31,8.6 2025-02-09,35,8.8 2025-02-10,34,8.8 2025-02-11,34,8.9 2025-02-12,35,9.0 2025-02-13,36,9.1 2025-02-14,35,9.2 2025-02-15,36,9.2 2025-02-16,39,9.6 2025-02-17,41,9.8 2025-02-18,45,10.4 2025-02-19,46,10.6 2025-02-20,44,10.6 2025-02-21,44,10.8 2025-02-22,44,10.9 2025-02-23,44,10.9 2025-02-24,42,10.9 2025-02-25,41,10.9 2025-02-26,40,10.9 2025-02-27,40,10.9 2025-02-28,40,10.9 2025-03-01,40,10.9 2025-03-02,39,10.9 2025-03-03,38,10.9 2025-03-04,40,11.0 2025-03-05,40,11.1 2025-03-06,40,11.3 2025-03-07,42,11.4 2025-03-08,41,11.5 2025-03-09,41,11.5 2025-03-10,40,11.5 2025-03-11,40,11.4 2025-03-12,39,11.4 2025-03-13,39,11.4 2025-03-14,38,11.4 2025-03-15,39,11.5 2025-03-16,38,11.6 2025-03-17,39,11.5 2025-03-18,38,11.6 2025-03-19,39,11.6 2025-03-20,38,11.6 2025-03-21,38,11.6 2025-03-22,38,11.6 2025-03-23,43,12.2 2025-03-24,42,12.2 2025-03-25,42,12.2 2025-03-26,39,12.2 2025-03-27,38,12.3 2025-03-28,37,12.0 2025-03-29,37,11.8 2025-03-30,35,12.2 2025-03-31,38,12.2 2025-04-01,37,12.3 2025-04-02,37,12.6 2025-04-03,37,12.8 2025-04-04,39,12.8 2025-04-05,41,13.1 2025-04-06,40,13.2 2025-04-07,39,13.3 2025-04-08,38,13.2 2025-04-09,36,13.0 2025-04-10,36,12.6 2025-04-11,34,12.4 2025-04-12,34,12.0 2025-04-13,31,11.4 2025-04-14,31,11.2 2025-04-15,30,11.1 2025-04-16,29,10.7 2025-04-17,28,10.2 2025-04-18,26,9.8 2025-04-19,34,10.4 2025-04-20,32,10.5 2025-04-21,29,10.5 2025-04-22,28,10.3 2025-04-23,26,10.1 2025-04-24,26,9.8 2025-04-25,24,9.3 2025-04-26,23,9.0 2025-04-27,22,8.4 2025-04-28,20,7.7 2025-04-29,20,7.8 2025-04-30,18,7.6 2025-05-01,19,7.1 2025-05-02,18,7.1 2025-05-03,18,6.9 2025-05-04,15,6.1 2025-05-05,14,5.4 2025-05-06,14,5.3 2025-05-07,22,6.8 2025-05-08,25,7.2 2025-05-09,23,7.2 2025-05-10,20,6.8 2025-05-11,18,6.4 2025-05-12,14,5.6 2025-05-13,12,4.7 2025-05-14,10,4.0 2025-05-15,11,3.8 2025-05-16,12,3.8 2025-05-17,10,3.6 2025-05-18,8,3.1 2025-05-19,9,3.0 2025-05-20,8,2.9 2025-05-21,5,2.3 2025-05-22,5,1.9 2025-05-23,2,0.9 2025-05-24,1,0.2 2025-05-25,1,0.3 2025-05-26,1,0.3 2025-05-27,1,0.3 2025-05-28,1,0.2 2025-05-29,1,0.2 2025-05-30,1,0.2 2025-05-31,1,0.2 2025-06-01,1,0.1 2025-06-02,1,0.0 2025-06-03,1,0.2 2025-06-04,1,0.2 2025-06-05,1,0.1 2025-06-06,1,0.1 2025-06-07,1,0.2 2025-06-08,0,0.0 2025-06-09,0,0.0 2025-06-10,0,0.0 2025-06-11,0,0.0 2025-06-12,0,0.0 2025-06-13,0,0.0 2025-06-14,0,0.0 2025-06-15,0,0.0 2025-06-16,0,0.0 2025-06-17,0,0.0 2025-06-18,0,0.0 2025-06-19,0,0.0 2025-06-20,0,0.0 2025-06-21,0,0.0 2025-06-22,0,0.0 2025-06-23,0,0.0 2025-06-24,0,0.0 2025-06-25,0,0.0 2025-06-26,0,0.0 2025-06-27,0,0.0 2025-06-28,0,0.0 2025-06-29,0,0.0 2025-06-30,0,0.0 2025-07-01,0,0.0 2025-07-02,0,0.0 2025-07-03,0,0.0 2025-07-04,0,0.0 2025-07-05,0,0.0 2025-07-06,0,0.0 2025-07-07,0,0.0 2025-07-08,0,0.0 2025-07-09,0,0.0 2025-07-10,0,0.0 2025-07-11,1,0.0 2025-07-12,1,0.0 2025-07-13,1,0.0