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MAD RIVER - ARCATA (ARCC1)
| Latitude: 40.91º N | Longitude: 124.06º W | Elevation: 13 Feet | | Forecast Type: Official Location |
| Location: Humboldt County in California | Bulletin Group: North Coast | River Group: North Coast |
| Issuance Time: | Feb 17 2026 at 1:37 PM PST | Next Issuance: | Feb 18 2026 at 9:00 AM PST
| |
| Action/Monitor: 15.0 Feet | Minor Flood: 22.0 Feet | Moderate Flood: 24.0 Feet | Major Flood: 28.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Mad River - Arcata (ARCC1)
#
# File Generation Time: 02/17/2026 at 01:37 PM PST
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 02/17/2026 at 12:00 PM PST
# Maximum Observed Stage: 8.96 Feet
# Maximum Observed Flow: 2266 cfs
#
# Earliest Date & Time of Maximum Forecast: 02/22/2026 at 04:00 AM PST
# Maximum Forecast Stage: 9.62 Feet
# Maximum Forecast Flow: 2994 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
02/12/2026 01 PM PST 6.79 599 Normal
02/12/2026 02 PM PST 6.80 604 + Normal
02/12/2026 03 PM PST 6.80 604 0 Normal
02/12/2026 04 PM PST 6.80 604 0 Normal
02/12/2026 05 PM PST 6.81 609 + Normal
02/12/2026 06 PM PST 6.81 609 0 Normal
02/12/2026 07 PM PST 6.80 604 - Normal
02/12/2026 08 PM PST 6.80 604 0 Normal
02/12/2026 09 PM PST 6.80 604 0 Normal
02/12/2026 10 PM PST 6.79 599 - Normal
02/12/2026 11 PM PST 6.78 594 - Normal
02/13/2026 12 AM PST 6.77 589 - Normal
02/13/2026 01 AM PST 6.76 584 - Normal
02/13/2026 02 AM PST 6.76 584 0 Normal
02/13/2026 03 AM PST 6.76 584 0 Normal
02/13/2026 04 AM PST 6.75 579 - Normal
02/13/2026 05 AM PST 6.75 579 0 Normal
02/13/2026 06 AM PST 6.75 579 0 Normal
02/13/2026 07 AM PST 6.75 579 0 Normal
02/13/2026 08 AM PST 6.75 579 0 Normal
02/13/2026 09 AM PST 6.74 574 - Normal
02/13/2026 10 AM PST 6.74 574 0 Normal
02/13/2026 11 AM PST 6.74 574 0 Normal
02/13/2026 12 PM PST 6.74 574 0 Normal
02/13/2026 01 PM PST 6.74 574 0 Normal
02/13/2026 02 PM PST 6.74 574 0 Normal
02/13/2026 03 PM PST 6.74 574 0 Normal
02/13/2026 04 PM PST 6.74 574 0 Normal
02/13/2026 05 PM PST 6.75 579 + Normal
02/13/2026 06 PM PST 6.75 579 0 Normal
02/13/2026 07 PM PST 6.75 579 0 Normal
02/13/2026 08 PM PST 6.75 579 0 Normal
02/13/2026 09 PM PST 6.74 574 - Normal
02/13/2026 10 PM PST 6.73 569 - Normal
02/13/2026 11 PM PST 6.73 569 0 Normal
02/14/2026 12 AM PST 6.72 565 - Normal
02/14/2026 01 AM PST 6.72 565 0 Normal
02/14/2026 02 AM PST 6.71 560 - Normal
02/14/2026 03 AM PST 6.72 565 + Normal
02/14/2026 04 AM PST 6.72 565 0 Normal
02/14/2026 05 AM PST 6.71 560 - Normal
02/14/2026 06 AM PST 6.71 560 0 Normal
02/14/2026 07 AM PST 6.70 555 - Normal
02/14/2026 08 AM PST 6.71 560 + Normal
02/14/2026 09 AM PST 6.71 560 0 Normal
02/14/2026 10 AM PST 6.71 560 0 Normal
02/14/2026 11 AM PST 6.71 560 0 Normal
02/14/2026 12 PM PST 6.71 560 0 Normal
02/14/2026 01 PM PST 6.71 560 0 Normal
02/14/2026 02 PM PST 6.71 560 0 Normal
02/14/2026 03 PM PST 6.71 560 0 Normal
02/14/2026 04 PM PST 6.71 560 0 Normal
02/14/2026 05 PM PST 6.72 565 + Normal
02/14/2026 06 PM PST 6.72 565 0 Normal
02/14/2026 07 PM PST 6.72 565 0 Normal
02/14/2026 08 PM PST 6.72 565 0 Normal
02/14/2026 09 PM PST 6.73 569 + Normal
02/14/2026 10 PM PST 6.72 565 - Normal
02/14/2026 11 PM PST 6.71 560 - Normal
02/15/2026 12 AM PST 6.70 555 - Normal
02/15/2026 01 AM PST 6.70 555 0 Normal
02/15/2026 02 AM PST 6.70 555 0 Normal
02/15/2026 03 AM PST 6.70 555 0 Normal
02/15/2026 04 AM PST 6.70 555 0 Normal
02/15/2026 05 AM PST 6.69 550 - Normal
02/15/2026 06 AM PST 6.69 550 0 Normal
02/15/2026 07 AM PST 6.70 555 + Normal
02/15/2026 08 AM PST 6.70 555 0 Normal
02/15/2026 09 AM PST 6.70 555 0 Normal
02/15/2026 10 AM PST 6.72 565 + Normal
02/15/2026 11 AM PST 6.72 565 0 Normal
02/15/2026 12 PM PST 6.74 574 + Normal
02/15/2026 01 PM PST 6.76 584 + Normal
02/15/2026 02 PM PST 6.78 594 + Normal
02/15/2026 03 PM PST 6.81 609 + Normal
02/15/2026 04 PM PST 6.86 635 + Normal
02/15/2026 05 PM PST 6.91 661 + Normal
02/15/2026 06 PM PST 6.94 677 + Normal
02/15/2026 07 PM PST 6.98 699 + Normal
02/15/2026 08 PM PST 7.02 721 + Normal
02/15/2026 09 PM PST 7.08 754 + Normal
02/15/2026 10 PM PST 7.15 795 + Normal
02/15/2026 11 PM PST 7.22 836 + Normal
02/16/2026 12 AM PST 7.34 910 + Normal
02/16/2026 01 AM PST 7.48 1000 + Normal
02/16/2026 02 AM PST 7.63 1102 + Normal
02/16/2026 03 AM PST 7.75 1187 + Normal
02/16/2026 04 AM PST 7.84 1254 + Normal
02/16/2026 05 AM PST 7.92 1314 + Normal
02/16/2026 06 AM PST 7.98 1361 + Normal
02/16/2026 07 AM PST 8.03 1400 + Normal
02/16/2026 08 AM PST 8.14 1492 + Normal
02/16/2026 09 AM PST 8.24 1579 + Normal
02/16/2026 10 AM PST 8.31 1641 + Normal
02/16/2026 11 AM PST 8.35 1676 + Normal
02/16/2026 12 PM PST 8.37 1694 + Normal
02/16/2026 01 PM PST 8.37 1694 0 Normal
02/16/2026 02 PM PST 8.36 1685 - Normal
02/16/2026 03 PM PST 8.33 1658 - Normal
02/16/2026 04 PM PST 8.32 1649 - Normal
02/16/2026 05 PM PST 8.29 1623 - Normal
02/16/2026 06 PM PST 8.25 1588 - Normal
02/16/2026 07 PM PST 8.23 1570 - Normal
02/16/2026 08 PM PST 8.19 1535 - Normal
02/16/2026 09 PM PST 8.16 1510 - Normal
02/16/2026 10 PM PST 8.13 1484 - Normal
02/16/2026 11 PM PST 8.12 1475 - Normal
02/17/2026 12 AM PST 8.11 1467 - Normal
02/17/2026 01 AM PST 8.12 1475 + Normal
02/17/2026 02 AM PST 8.16 1510 + Normal
02/17/2026 03 AM PST 8.20 1544 + Normal
02/17/2026 04 AM PST 8.25 1588 + Normal
02/17/2026 05 AM PST 8.32 1649 + Normal
02/17/2026 06 AM PST 8.42 1740 + Normal
02/17/2026 07 AM PST 8.54 1851 + Normal
02/17/2026 08 AM PST 8.65 1956 + Normal
02/17/2026 09 AM PST 8.74 2044 + Normal
02/17/2026 10 AM PST 8.84 2143 + Normal
02/17/2026 11 AM PST 8.91 2214 + Normal
02/17/2026 12 PM PST 8.96 2266 + Normal
02/17/2026 01 PM PST 8.95 2255 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
02/17/2026 02 PM PST 8.94 2245 Normal
02/17/2026 03 PM PST 8.94 2245 0 Normal
02/17/2026 04 PM PST 8.93 2235 - Normal
02/17/2026 05 PM PST 8.93 2235 0 Normal
02/17/2026 06 PM PST 8.92 2225 - Normal
02/17/2026 07 PM PST 8.91 2214 - Normal
02/17/2026 08 PM PST 8.91 2214 0 Normal
02/17/2026 09 PM PST 8.90 2204 - Normal
02/17/2026 10 PM PST 8.90 2204 0 Normal
02/17/2026 11 PM PST 8.89 2194 - Normal
02/18/2026 12 AM PST 8.89 2194 0 Normal
02/18/2026 01 AM PST 8.87 2174 - Normal
02/18/2026 02 AM PST 8.86 2164 - Normal
02/18/2026 03 AM PST 8.83 2133 - Normal
02/18/2026 04 AM PST 8.80 2103 - Normal
02/18/2026 05 AM PST 8.77 2073 - Normal
02/18/2026 06 AM PST 8.74 2044 - Normal
02/18/2026 07 AM PST 8.71 2014 - Normal
02/18/2026 08 AM PST 8.69 1995 - Normal
02/18/2026 09 AM PST 8.65 1956 - Normal
02/18/2026 10 AM PST 8.62 1927 - Normal
02/18/2026 11 AM PST 8.59 1899 - Normal
02/18/2026 12 PM PST 8.56 1870 - Normal
02/18/2026 01 PM PST 8.53 1842 - Normal
02/18/2026 02 PM PST 8.50 1814 - Normal
02/18/2026 03 PM PST 8.47 1786 - Normal
02/18/2026 04 PM PST 8.44 1758 - Normal
02/18/2026 05 PM PST 8.41 1731 - Normal
02/18/2026 06 PM PST 8.38 1703 - Normal
02/18/2026 07 PM PST 8.36 1685 - Normal
02/18/2026 08 PM PST 8.34 1667 - Normal
02/18/2026 09 PM PST 8.32 1649 - Normal
02/18/2026 10 PM PST 8.32 1649 0 Normal
02/18/2026 11 PM PST 8.33 1658 + Normal
02/19/2026 12 AM PST 8.34 1667 + Normal
02/19/2026 01 AM PST 8.35 1676 + Normal
02/19/2026 02 AM PST 8.37 1694 + Normal
02/19/2026 03 AM PST 8.40 1722 + Normal
02/19/2026 04 AM PST 8.43 1749 + Normal
02/19/2026 05 AM PST 8.47 1786 + Normal
02/19/2026 06 AM PST 8.50 1814 + Normal
02/19/2026 07 AM PST 8.52 1832 + Normal
02/19/2026 08 AM PST 8.53 1842 + Normal
02/19/2026 09 AM PST 8.54 1851 + Normal
02/19/2026 10 AM PST 8.54 1851 0 Normal
02/19/2026 11 AM PST 8.54 1851 0 Normal
02/19/2026 12 PM PST 8.54 1851 0 Normal
02/19/2026 01 PM PST 8.53 1842 - Normal
02/19/2026 02 PM PST 8.53 1842 0 Normal
02/19/2026 03 PM PST 8.52 1832 - Normal
02/19/2026 04 PM PST 8.51 1823 - Normal
02/19/2026 05 PM PST 8.50 1814 - Normal
02/19/2026 06 PM PST 8.49 1804 - Normal
02/19/2026 07 PM PST 8.49 1804 0 Normal
02/19/2026 08 PM PST 8.48 1795 - Normal
02/19/2026 09 PM PST 8.48 1795 0 Normal
02/19/2026 10 PM PST 8.47 1786 - Normal
02/19/2026 11 PM PST 8.47 1786 0 Normal
02/20/2026 12 AM PST 8.46 1777 - Normal
02/20/2026 01 AM PST 8.46 1777 0 Normal
02/20/2026 02 AM PST 8.45 1767 - Normal
02/20/2026 03 AM PST 8.44 1758 - Normal
02/20/2026 04 AM PST 8.43 1749 - Normal
02/20/2026 05 AM PST 8.42 1740 - Normal
02/20/2026 06 AM PST 8.41 1731 - Normal
02/20/2026 07 AM PST 8.40 1722 - Normal
02/20/2026 08 AM PST 8.38 1703 - Normal
02/20/2026 09 AM PST 8.36 1685 - Normal
02/20/2026 10 AM PST 8.34 1667 - Normal
02/20/2026 11 AM PST 8.32 1649 - Normal
02/20/2026 12 PM PST 8.30 1632 - Normal
02/20/2026 01 PM PST 8.28 1614 - Normal
02/20/2026 02 PM PST 8.26 1596 - Normal
02/20/2026 03 PM PST 8.24 1579 - Normal
02/20/2026 04 PM PST 8.22 1561 - Normal
02/20/2026 05 PM PST 8.21 1553 - Normal
02/20/2026 06 PM PST 8.20 1544 - Normal
02/20/2026 07 PM PST 8.18 1527 - Normal
02/20/2026 08 PM PST 8.17 1518 - Normal
02/20/2026 09 PM PST 8.16 1510 - Normal
02/20/2026 10 PM PST 8.15 1501 - Normal
02/20/2026 11 PM PST 8.14 1492 - Normal
02/21/2026 12 AM PST 8.14 1492 0 Normal
02/21/2026 01 AM PST 8.14 1492 0 Normal
02/21/2026 02 AM PST 8.15 1501 + Normal
02/21/2026 03 AM PST 8.17 1518 + Normal
02/21/2026 04 AM PST 8.19 1535 + Normal
02/21/2026 05 AM PST 8.21 1553 + Normal
02/21/2026 06 AM PST 8.23 1570 + Normal
02/21/2026 07 AM PST 8.25 1588 + Normal
02/21/2026 08 AM PST 8.26 1596 + Normal
02/21/2026 09 AM PST 8.26 1596 0 Normal
02/21/2026 10 AM PST 8.26 1596 0 Normal
02/21/2026 11 AM PST 8.26 1596 0 Normal
02/21/2026 12 PM PST 8.26 1596 0 Normal
02/21/2026 01 PM PST 8.26 1596 0 Normal
02/21/2026 02 PM PST 8.26 1596 0 Normal
02/21/2026 03 PM PST 8.28 1614 + Normal
02/21/2026 04 PM PST 8.29 1623 + Normal
02/21/2026 05 PM PST 8.32 1649 + Normal
02/21/2026 06 PM PST 8.35 1676 + Normal
02/21/2026 07 PM PST 8.40 1722 + Normal
02/21/2026 08 PM PST 8.47 1786 + Normal
02/21/2026 09 PM PST 8.58 1889 + Normal
02/21/2026 10 PM PST 8.71 2014 + Normal
02/21/2026 11 PM PST 8.85 2153 + Normal
02/22/2026 12 AM PST 8.97 2276 + Normal
02/22/2026 01 AM PST 9.10 2412 + Normal
02/22/2026 02 AM PST 9.25 2574 + Normal
02/22/2026 03 AM PST 9.43 2775 + Normal
02/22/2026 04 AM PST 9.62 2994 + Normal
#
# 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.
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