REDWOOD CREEK - BLUE LAKE (BLKC1)
Latitude: 40.91º NLongitude: 123.81º WElevation: 850 FeetForecast Type: Unofficial Location
Location: Humboldt County in CalforniaBulletin Group: North CoastRiver Group: North Coast
Issuance Time: Apr 17 2026 at 7:23 AM PDTNext Issuance: Apr 18 2026 at 9:00 AM PDT
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Redwood Creek - Blue Lake (BLKC1)
#
# File Generation Time:  04/17/2026 at 07:25 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/13/2026 at 02:00 AM PDT
# Maximum Observed Stage:                       2.24 Feet
# Maximum Observed Flow:                        164 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/22/2026 at 05:00 AM PDT
# Maximum Forecast Stage:                       2.69 Feet
# Maximum Forecast Flow:                        279 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/12/2026 07 AM PDT            2.10            135                Not Applicable
  04/12/2026 08 AM PDT            2.09            133         -      Not Applicable
  04/12/2026 09 AM PDT            2.09            133         0      Not Applicable
  04/12/2026 10 AM PDT            2.10            135         +      Not Applicable
  04/12/2026 11 AM PDT            2.10            135         0      Not Applicable
  04/12/2026 12 PM PDT            2.11            137         +      Not Applicable
  04/12/2026 01 PM PDT            2.12            139         +      Not Applicable
  04/12/2026 02 PM PDT            2.19            153         +      Not Applicable
  04/12/2026 03 PM PDT            2.18            151         -      Not Applicable
  04/12/2026 04 PM PDT            2.19            153         +      Not Applicable
  04/12/2026 05 PM PDT            2.16            147         -      Not Applicable
  04/12/2026 06 PM PDT            2.16            147         0      Not Applicable
  04/12/2026 07 PM PDT            2.16            147         0      Not Applicable
  04/12/2026 08 PM PDT            2.16            147         0      Not Applicable
  04/12/2026 09 PM PDT            2.18            151         +      Not Applicable
  04/12/2026 10 PM PDT            2.20            155         +      Not Applicable
  04/12/2026 11 PM PDT            2.23            162         +      Not Applicable
  04/13/2026 12 AM PDT            2.23            162         0      Not Applicable
  04/13/2026 01 AM PDT            2.24            164         +      Not Applicable
  04/13/2026 02 AM PDT            2.24            164         0      Not Applicable
  04/13/2026 03 AM PDT            2.23            162         -      Not Applicable
  04/13/2026 04 AM PDT            2.22            160         -      Not Applicable
  04/13/2026 05 AM PDT            2.20            155         -      Not Applicable
  04/13/2026 06 AM PDT            2.19            153         -      Not Applicable
  04/13/2026 07 AM PDT            2.18            151         -      Not Applicable
  04/13/2026 08 AM PDT            2.17            149         -      Not Applicable
  04/13/2026 09 AM PDT            2.16            147         -      Not Applicable
  04/13/2026 10 AM PDT            2.15            145         -      Not Applicable
  04/13/2026 11 AM PDT            2.15            145         0      Not Applicable
  04/13/2026 12 PM PDT            2.14            143         -      Not Applicable
  04/13/2026 01 PM PDT            2.13            141         -      Not Applicable
  04/13/2026 02 PM PDT            2.12            139         -      Not Applicable
  04/13/2026 03 PM PDT            2.11            137         -      Not Applicable
  04/13/2026 04 PM PDT            2.10            135         -      Not Applicable
  04/13/2026 05 PM PDT            2.10            135         0      Not Applicable
  04/13/2026 06 PM PDT            2.09            133         -      Not Applicable
  04/13/2026 07 PM PDT            2.08            131         -      Not Applicable
  04/13/2026 08 PM PDT            2.07            129         -      Not Applicable
  04/13/2026 09 PM PDT            2.07            129         0      Not Applicable
  04/13/2026 10 PM PDT            2.06            127         -      Not Applicable
  04/13/2026 11 PM PDT            2.05            125         -      Not Applicable
  04/14/2026 12 AM PDT            2.05            125         0      Not Applicable
  04/14/2026 01 AM PDT            2.05            125         0      Not Applicable
  04/14/2026 02 AM PDT            2.04            123         -      Not Applicable
  04/14/2026 03 AM PDT            2.04            123         0      Not Applicable
  04/14/2026 04 AM PDT            2.03            121         -      Not Applicable
  04/14/2026 05 AM PDT            2.03            121         0      Not Applicable
  04/14/2026 06 AM PDT            2.03            121         0      Not Applicable
  04/14/2026 07 AM PDT            2.02            120         -      Not Applicable
  04/14/2026 08 AM PDT            2.02            120         0      Not Applicable
  04/14/2026 09 AM PDT            2.02            120         0      Not Applicable
  04/14/2026 10 AM PDT            2.01            118         -      Not Applicable
  04/14/2026 11 AM PDT            2.01            118         0      Not Applicable
  04/14/2026 12 PM PDT            2.01            118         0      Not Applicable
  04/14/2026 01 PM PDT            2.01            118         0      Not Applicable
  04/14/2026 02 PM PDT            2.00            116         -      Not Applicable
  04/14/2026 03 PM PDT            2.00            116         0      Not Applicable
  04/14/2026 04 PM PDT            2.00            116         0      Not Applicable
  04/14/2026 05 PM PDT            1.99            114         -      Not Applicable
  04/14/2026 06 PM PDT            1.98            112         -      Not Applicable
  04/14/2026 07 PM PDT            1.98            112         0      Not Applicable
  04/14/2026 08 PM PDT            1.97            110         -      Not Applicable
  04/14/2026 09 PM PDT            1.97            110         0      Not Applicable
  04/14/2026 10 PM PDT            1.97            110         0      Not Applicable
  04/14/2026 11 PM PDT            1.96            109         -      Not Applicable
  04/15/2026 12 AM PDT            1.96            109         0      Not Applicable
  04/15/2026 01 AM PDT            1.95            107         -      Not Applicable
  04/15/2026 02 AM PDT            1.95            107         0      Not Applicable
  04/15/2026 03 AM PDT            1.95            107         0      Not Applicable
  04/15/2026 04 AM PDT            1.95            107         0      Not Applicable
  04/15/2026 05 AM PDT            1.95            107         0      Not Applicable
  04/15/2026 06 AM PDT            1.94            105         -      Not Applicable
  04/15/2026 07 AM PDT            1.94            105         0      Not Applicable
  04/15/2026 08 AM PDT            1.94            105         0      Not Applicable
  04/15/2026 09 AM PDT            1.94            105         0      Not Applicable
  04/15/2026 10 AM PDT            1.94            105         0      Not Applicable
  04/15/2026 11 AM PDT            1.95            107         +      Not Applicable
  04/15/2026 12 PM PDT            1.96            109         +      Not Applicable
  04/15/2026 01 PM PDT            1.97            110         +      Not Applicable
  04/15/2026 02 PM PDT            1.99            114         +      Not Applicable
  04/15/2026 03 PM PDT            2.01            118         +      Not Applicable
  04/15/2026 04 PM PDT            2.05            125         +      Not Applicable
  04/15/2026 05 PM PDT            2.08            131         +      Not Applicable
  04/15/2026 06 PM PDT            2.12            139         +      Not Applicable
  04/15/2026 07 PM PDT            2.14            143         +      Not Applicable
  04/15/2026 08 PM PDT            2.17            149         +      Not Applicable
  04/15/2026 09 PM PDT            2.19            153         +      Not Applicable
  04/15/2026 10 PM PDT            2.21            158         +      Not Applicable
  04/15/2026 11 PM PDT            2.22            160         +      Not Applicable
  04/16/2026 12 AM PDT            2.21            158         -      Not Applicable
  04/16/2026 01 AM PDT            2.21            158         0      Not Applicable
  04/16/2026 02 AM PDT            2.20            155         -      Not Applicable
  04/16/2026 03 AM PDT            2.19            153         -      Not Applicable
  04/16/2026 04 AM PDT            2.18            151         -      Not Applicable
  04/16/2026 05 AM PDT            2.17            149         -      Not Applicable
  04/16/2026 06 AM PDT            2.15            145         -      Not Applicable
  04/16/2026 07 AM PDT            2.15            145         0      Not Applicable
  04/16/2026 08 AM PDT            2.13            141         -      Not Applicable
  04/16/2026 09 AM PDT            2.13            141         0      Not Applicable
  04/16/2026 10 AM PDT            2.12            139         -      Not Applicable
  04/16/2026 11 AM PDT            2.11            137         -      Not Applicable
  04/16/2026 12 PM PDT            2.11            137         0      Not Applicable
  04/16/2026 01 PM PDT            2.11            137         0      Not Applicable
  04/16/2026 02 PM PDT            2.10            135         -      Not Applicable
  04/16/2026 03 PM PDT            2.09            133         -      Not Applicable
  04/16/2026 04 PM PDT            2.08            131         -      Not Applicable
  04/16/2026 05 PM PDT            2.08            131         0      Not Applicable
  04/16/2026 06 PM PDT            2.07            129         -      Not Applicable
  04/16/2026 07 PM PDT            2.06            127         -      Not Applicable
  04/16/2026 08 PM PDT            2.05            125         -      Not Applicable
  04/16/2026 09 PM PDT            2.05            125         0      Not Applicable
  04/16/2026 10 PM PDT            2.04            123         -      Not Applicable
  04/16/2026 11 PM PDT            2.03            121         -      Not Applicable
  04/17/2026 12 AM PDT            2.03            121         0      Not Applicable
  04/17/2026 01 AM PDT            2.02            120         -      Not Applicable
  04/17/2026 02 AM PDT            2.02            120         0      Not Applicable
  04/17/2026 03 AM PDT            2.01            118         -      Not Applicable
  04/17/2026 04 AM PDT            2.01            118         0      Not Applicable
  04/17/2026 05 AM PDT            2.01            118         0      Not Applicable
  04/17/2026 06 AM PDT            2.01            118         0      Not Applicable
  04/17/2026 07 AM PDT            2.00            116         -      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/17/2026 08 AM PDT            2.00            116                Not Applicable
  04/17/2026 09 AM PDT            2.00            116         0      Not Applicable
  04/17/2026 10 AM PDT            1.99            114         -      Not Applicable
  04/17/2026 11 AM PDT            1.99            114         0      Not Applicable
  04/17/2026 12 PM PDT            1.99            114         0      Not Applicable
  04/17/2026 01 PM PDT            1.99            114         0      Not Applicable
  04/17/2026 02 PM PDT            1.98            112         -      Not Applicable
  04/17/2026 03 PM PDT            1.98            112         0      Not Applicable
  04/17/2026 04 PM PDT            1.98            112         0      Not Applicable
  04/17/2026 05 PM PDT            1.97            110         -      Not Applicable
  04/17/2026 06 PM PDT            1.97            110         0      Not Applicable
  04/17/2026 07 PM PDT            1.97            110         0      Not Applicable
  04/17/2026 08 PM PDT            1.96            109         -      Not Applicable
  04/17/2026 09 PM PDT            1.96            109         0      Not Applicable
  04/17/2026 10 PM PDT            1.96            109         0      Not Applicable
  04/17/2026 11 PM PDT            1.95            107         -      Not Applicable
  04/18/2026 12 AM PDT            1.95            107         0      Not Applicable
  04/18/2026 01 AM PDT            1.95            107         0      Not Applicable
  04/18/2026 02 AM PDT            1.95            107         0      Not Applicable
  04/18/2026 03 AM PDT            1.94            105         -      Not Applicable
  04/18/2026 04 AM PDT            1.94            105         0      Not Applicable
  04/18/2026 05 AM PDT            1.94            105         0      Not Applicable
  04/18/2026 06 AM PDT            1.93            103         -      Not Applicable
  04/18/2026 07 AM PDT            1.93            103         0      Not Applicable
  04/18/2026 08 AM PDT            1.93            103         0      Not Applicable
  04/18/2026 09 AM PDT            1.92            101         -      Not Applicable
  04/18/2026 10 AM PDT            1.92            101         0      Not Applicable
  04/18/2026 11 AM PDT            1.92            101         0      Not Applicable
  04/18/2026 12 PM PDT            1.92            101         0      Not Applicable
  04/18/2026 01 PM PDT            1.91            100         -      Not Applicable
  04/18/2026 02 PM PDT            1.91            100         0      Not Applicable
  04/18/2026 03 PM PDT            1.91            100         0      Not Applicable
  04/18/2026 04 PM PDT            1.90             98         -      Not Applicable
  04/18/2026 05 PM PDT            1.90             98         0      Not Applicable
  04/18/2026 06 PM PDT            1.90             98         0      Not Applicable
  04/18/2026 07 PM PDT            1.90             98         0      Not Applicable
  04/18/2026 08 PM PDT            1.89             96         -      Not Applicable
  04/18/2026 09 PM PDT            1.89             96         0      Not Applicable
  04/18/2026 10 PM PDT            1.89             96         0      Not Applicable
  04/18/2026 11 PM PDT            1.88             95         -      Not Applicable
  04/19/2026 12 AM PDT            1.88             95         0      Not Applicable
  04/19/2026 01 AM PDT            1.88             95         0      Not Applicable
  04/19/2026 02 AM PDT            1.88             95         0      Not Applicable
  04/19/2026 03 AM PDT            1.87             93         -      Not Applicable
  04/19/2026 04 AM PDT            1.87             93         0      Not Applicable
  04/19/2026 05 AM PDT            1.87             93         0      Not Applicable
  04/19/2026 06 AM PDT            1.87             93         0      Not Applicable
  04/19/2026 07 AM PDT            1.87             93         0      Not Applicable
  04/19/2026 08 AM PDT            1.87             93         0      Not Applicable
  04/19/2026 09 AM PDT            1.86             91         -      Not Applicable
  04/19/2026 10 AM PDT            1.86             91         0      Not Applicable
  04/19/2026 11 AM PDT            1.86             91         0      Not Applicable
  04/19/2026 12 PM PDT            1.86             91         0      Not Applicable
  04/19/2026 01 PM PDT            1.86             91         0      Not Applicable
  04/19/2026 02 PM PDT            1.86             91         0      Not Applicable
  04/19/2026 03 PM PDT            1.86             91         0      Not Applicable
  04/19/2026 04 PM PDT            1.86             91         0      Not Applicable
  04/19/2026 05 PM PDT            1.85             90         -      Not Applicable
  04/19/2026 06 PM PDT            1.85             90         0      Not Applicable
  04/19/2026 07 PM PDT            1.85             90         0      Not Applicable
  04/19/2026 08 PM PDT            1.85             90         0      Not Applicable
  04/19/2026 09 PM PDT            1.85             90         0      Not Applicable
  04/19/2026 10 PM PDT            1.85             90         0      Not Applicable
  04/19/2026 11 PM PDT            1.85             90         0      Not Applicable
  04/20/2026 12 AM PDT            1.85             90         0      Not Applicable
  04/20/2026 01 AM PDT            1.85             90         0      Not Applicable
  04/20/2026 02 AM PDT            1.86             91         +      Not Applicable
  04/20/2026 03 AM PDT            1.86             91         0      Not Applicable
  04/20/2026 04 AM PDT            1.87             93         +      Not Applicable
  04/20/2026 05 AM PDT            1.87             93         0      Not Applicable
  04/20/2026 06 AM PDT            1.88             95         +      Not Applicable
  04/20/2026 07 AM PDT            1.89             96         +      Not Applicable
  04/20/2026 08 AM PDT            1.91            100         +      Not Applicable
  04/20/2026 09 AM PDT            1.94            105         +      Not Applicable
  04/20/2026 10 AM PDT            1.96            109         +      Not Applicable
  04/20/2026 11 AM PDT            1.98            112         +      Not Applicable
  04/20/2026 12 PM PDT            2.00            116         +      Not Applicable
  04/20/2026 01 PM PDT            2.02            120         +      Not Applicable
  04/20/2026 02 PM PDT            2.06            127         +      Not Applicable
  04/20/2026 03 PM PDT            2.12            139         +      Not Applicable
  04/20/2026 04 PM PDT            2.16            147         +      Not Applicable
  04/20/2026 05 PM PDT            2.19            153         +      Not Applicable
  04/20/2026 06 PM PDT            2.22            160         +      Not Applicable
  04/20/2026 07 PM PDT            2.24            164         +      Not Applicable
  04/20/2026 08 PM PDT            2.28            173         +      Not Applicable
  04/20/2026 09 PM PDT            2.33            185         +      Not Applicable
  04/20/2026 10 PM PDT            2.36            192         +      Not Applicable
  04/20/2026 11 PM PDT            2.39            199         +      Not Applicable
  04/21/2026 12 AM PDT            2.41            204         +      Not Applicable
  04/21/2026 01 AM PDT            2.41            204         0      Not Applicable
  04/21/2026 02 AM PDT            2.40            201         -      Not Applicable
  04/21/2026 03 AM PDT            2.36            192         -      Not Applicable
  04/21/2026 04 AM PDT            2.33            185         -      Not Applicable
  04/21/2026 05 AM PDT            2.31            180         -      Not Applicable
  04/21/2026 06 AM PDT            2.29            175         -      Not Applicable
  04/21/2026 07 AM PDT            2.28            173         -      Not Applicable
  04/21/2026 08 AM PDT            2.28            173         0      Not Applicable
  04/21/2026 09 AM PDT            2.29            175         +      Not Applicable
  04/21/2026 10 AM PDT            2.30            178         +      Not Applicable
  04/21/2026 11 AM PDT            2.30            178         0      Not Applicable
  04/21/2026 12 PM PDT            2.31            180         +      Not Applicable
  04/21/2026 01 PM PDT            2.32            182         +      Not Applicable
  04/21/2026 02 PM PDT            2.34            187         +      Not Applicable
  04/21/2026 03 PM PDT            2.37            194         +      Not Applicable
  04/21/2026 04 PM PDT            2.40            201         +      Not Applicable
  04/21/2026 05 PM PDT            2.42            206         +      Not Applicable
  04/21/2026 06 PM PDT            2.43            209         +      Not Applicable
  04/21/2026 07 PM PDT            2.45            214         +      Not Applicable
  04/21/2026 08 PM PDT            2.49            224         +      Not Applicable
  04/21/2026 09 PM PDT            2.54            237         +      Not Applicable
  04/21/2026 10 PM PDT            2.58            248         +      Not Applicable
  04/21/2026 11 PM PDT            2.62            259         +      Not Applicable
  04/22/2026 12 AM PDT            2.64            265         +      Not Applicable
  04/22/2026 01 AM PDT            2.65            268         +      Not Applicable
  04/22/2026 02 AM PDT            2.67            273         +      Not Applicable
  04/22/2026 03 AM PDT            2.68            276         +      Not Applicable
  04/22/2026 04 AM PDT            2.68            276         0      Not Applicable
  04/22/2026 05 AM PDT            2.69            279         +      Not Applicable
#
# NOTE 1: Stages are rounded to the nearest hundredth (.01) of a foot.
# NOTE 2: Flows are rounded to the nearest (1) cfs.
# NOTE 3: Trends are determined using hourly change in unrounded stage and flow.
# NOTE 4: Maximum Values are determined using unrounded stage and flow.