CNRFC - Hydrology - River Guidance - Tabular Data

Location:

# NOTE 1: # NOTE 2: # NOTE 3: # NOTE 4:

KLAMATHRUSNAPSOUTHBAYSALINASSOCALSANDIEGOUPRSACLWRSACFTHRYUBAAMERICANCAPUTAHTULARESANJOAQNSANJOAQESIERRAHUMBOLDT = window.location.search; = new URLSearchParams(queryString); = window.location.href.split('?')[0] + "?" + urlParams.toString(); class="head">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: Apr 21 2026 at 7:58 AM PDT Next Issuance: Apr 22 2026 at 9:00 AM PDT width="16%">
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 04/21/2026 at 07:59 AM PDT Date & Time of Maximum Observed: 04/21/2026 at 07:00 AM PDT 8.37 Feet 1154 cfs & Time of Maximum Forecast: 04/22/2026 at 07:00 AM PDT 9.13 Feet 1911 cfs Stage (Feet) Flow (cfs) Trend Observed Status ------------------------------------------------------------- 8.11 945 Normal 8.09 930 - Normal 8.08 923 - Normal 8.09 930 + Normal 8.09 930 0 Normal 8.10 938 + Normal 8.08 923 - Normal 8.06 908 - Normal 8.06 908 0 Normal 8.04 893 - Normal 8.05 900 + Normal 8.04 893 - Normal 8.01 871 - Normal 8.01 871 0 Normal 7.98 849 - Normal 7.96 835 - Normal 7.94 821 - Normal 7.91 800 - Normal 7.90 793 - Normal 7.89 786 - Normal 7.86 766 - Normal 7.86 766 0 Normal 7.86 766 0 Normal 7.83 746 - Normal 7.83 746 0 Normal 7.82 739 - Normal 7.80 726 - Normal 7.80 726 0 Normal 7.77 706 - Normal 7.78 713 + Normal 7.78 713 0 Normal 7.77 706 - Normal 7.76 700 - Normal 7.76 700 0 Normal 7.75 693 - Normal 7.75 693 0 Normal 7.73 682 - Normal 7.72 677 - Normal 7.70 666 - Normal 7.71 672 + Normal 7.70 666 - Normal 7.67 650 - Normal 7.66 645 - Normal 7.65 640 - Normal 7.63 630 - Normal 7.63 630 0 Normal 7.62 624 - Normal 7.61 619 - Normal 7.60 614 - Normal 7.59 609 - Normal 7.59 609 0 Normal 7.59 609 0 Normal 7.59 609 0 Normal 7.58 604 - Normal 7.57 599 - Normal 7.56 594 - Normal 7.55 589 - Normal 7.55 589 0 Normal 7.55 589 0 Normal 7.55 589 0 Normal 7.55 589 0 Normal 7.53 579 - Normal 7.53 579 0 Normal 7.52 574 - Normal 7.51 569 - Normal 7.50 565 - Normal 7.47 550 - Normal 7.47 550 0 Normal 7.47 550 0 Normal 7.47 550 0 Normal 7.45 541 - Normal 7.45 541 0 Normal 7.43 531 - Normal 7.43 531 0 Normal 7.43 531 0 Normal 7.42 526 - Normal 7.42 526 0 Normal 7.42 526 0 Normal 7.41 522 - Normal 7.41 522 0 Normal 7.41 522 0 Normal 7.41 522 0 Normal 7.41 522 0 Normal 7.42 526 + Normal 7.40 517 - Normal 7.40 517 0 Normal 7.41 522 + Normal 7.38 508 - Normal 7.37 503 - Normal 7.35 494 - Normal 7.35 494 0 Normal 7.33 485 - Normal 7.34 490 + Normal 7.32 481 - Normal 7.31 476 - Normal 7.32 481 + Normal 7.33 485 + Normal 7.32 481 - Normal 7.33 485 + Normal 7.34 490 + Normal 7.35 494 + Normal 7.35 494 0 Normal 7.35 494 0 Normal 7.35 494 0 Normal 7.36 499 + Normal 7.38 508 + Normal 7.39 512 + Normal 7.41 522 + Normal 7.44 536 + Normal 7.46 545 + Normal 7.50 565 + Normal 7.53 579 + Normal 7.57 599 + Normal 7.62 624 + Normal 7.70 666 + Normal 7.78 713 + Normal 7.88 779 + Normal 8.01 871 + Normal 8.12 953 + Normal 8.24 1047 + Normal 8.37 1154 + Normal Stage (Feet) Flow (cfs) Trend Forecast Status ------------------------------------------------------------- 8.56 1321 Normal 8.71 1464 + Normal 8.82 1576 + Normal 8.89 1649 + Normal 8.91 1670 + Normal 8.87 1628 - Normal 8.80 1555 - Normal 8.72 1474 - Normal 8.65 1404 - Normal 8.62 1376 - Normal 8.61 1367 - Normal 8.55 1312 - Normal 8.51 1276 - Normal 8.49 1258 - Normal 8.50 1267 + Normal 8.53 1294 + Normal 8.58 1339 + Normal 8.68 1434 + Normal 8.80 1555 + Normal 8.92 1681 + Normal 9.01 1778 + Normal 9.08 1855 + Normal 9.12 1900 + Normal 9.13 1911 + Normal 9.13 1911 0 Normal 9.11 1889 - Normal 9.09 1866 - Normal 9.07 1844 - Normal 9.03 1800 - Normal 8.98 1745 - Normal 8.93 1691 - Normal 8.87 1628 - Normal 8.82 1576 - Normal 8.78 1534 - Normal 8.74 1494 - Normal 8.71 1464 - Normal 8.68 1434 - Normal 8.65 1404 - Normal 8.63 1385 - Normal 8.62 1376 - Normal 8.62 1376 0 Normal 8.63 1385 + Normal 8.64 1395 + Normal 8.66 1414 + Normal 8.67 1424 + Normal 8.68 1434 + Normal 8.67 1424 - Normal 8.65 1404 - Normal 8.63 1385 - Normal 8.60 1358 - Normal 8.57 1330 - Normal 8.55 1312 - Normal 8.53 1294 - Normal 8.52 1285 - Normal 8.51 1276 - Normal 8.50 1267 - Normal 8.50 1267 0 Normal 8.49 1258 - Normal 8.49 1258 0 Normal 8.48 1249 - Normal 8.47 1240 - Normal 8.46 1232 - Normal 8.46 1232 0 Normal 8.45 1223 - Normal 8.45 1223 0 Normal 8.44 1214 - Normal 8.43 1205 - Normal 8.42 1197 - Normal 8.41 1188 - Normal 8.41 1188 0 Normal 8.40 1180 - Normal 8.39 1171 - Normal 8.39 1171 0 Normal 8.38 1163 - Normal 8.37 1154 - Normal 8.37 1154 0 Normal 8.36 1146 - Normal 8.35 1137 - Normal 8.34 1129 - Normal 8.34 1129 0 Normal 8.33 1121 - Normal 8.32 1112 - Normal 8.32 1112 0 Normal 8.31 1104 - Normal 8.30 1096 - Normal 8.30 1096 0 Normal 8.29 1088 - Normal 8.28 1079 - Normal 8.28 1079 0 Normal 8.27 1071 - Normal 8.26 1063 - Normal 8.26 1063 0 Normal 8.25 1055 - Normal 8.24 1047 - Normal 8.24 1047 0 Normal 8.23 1039 - Normal 8.22 1031 - Normal 8.21 1023 - Normal 8.21 1023 0 Normal 8.20 1015 - Normal 8.20 1015 0 Normal 8.19 1007 - Normal 8.18 999 - Normal 8.18 999 0 Normal 8.17 992 - Normal 8.17 992 0 Normal 8.16 984 - Normal 8.15 976 - Normal 8.15 976 0 Normal 8.14 968 - Normal 8.14 968 0 Normal 8.13 961 - Normal 8.12 953 - Normal 8.12 953 0 Normal 8.11 945 - Normal 8.10 938 - Normal 8.10 938 0 Normal 8.09 930 - Normal Stages are rounded to the nearest hundredth (.01) of a foot. Flows are rounded to the nearest (1) cfs. Trends are determined using hourly change in unrounded stage and flow. Maximum Values are determined using unrounded stage and flow. End Web Content -->
communication-links"> class ="two-third-first nopad">