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">MATTOLE RIVER - PETROLIA (MTOC1)
Latitude: 40.31º N Longitude: 124.28º W Elevation: 40 Feet Forecast Type: Unofficial Location
Location: Humboldt County in California Bulletin Group: North Coast River Group: North Coast
Issuance Time: Apr 22 2026 at 7:27 AM PDT Next Issuance: Apr 23 2026 at 9:00 AM PDT width="16%">
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A

# Tabular Observed and Forecast Hydrograph Information River - Petrolia (MTOC1) 04/22/2026 at 07:28 AM PDT Date & Time of Maximum Observed: 04/21/2026 at 11:00 AM PDT 12.41 Feet 510 cfs & Time of Maximum Forecast: 04/22/2026 at 08:00 AM PDT 12.37 Feet 469 cfs Stage (Feet) Flow (cfs) Trend Observed Status ------------------------------------------------------------- 12.36 458 Not Applicable 12.36 458 0 Not Applicable 12.36 458 0 Not Applicable 12.35 448 - Not Applicable 12.35 448 0 Not Applicable 12.36 458 + Not Applicable 12.36 458 0 Not Applicable 12.36 458 0 Not Applicable 12.35 448 - Not Applicable 12.35 448 0 Not Applicable 12.35 448 0 Not Applicable 12.35 448 0 Not Applicable 12.34 438 - Not Applicable 12.34 438 0 Not Applicable 12.33 428 - Not Applicable 12.33 428 0 Not Applicable 12.33 428 0 Not Applicable 12.33 428 0 Not Applicable 12.32 419 - Not Applicable 12.32 419 0 Not Applicable 12.32 419 0 Not Applicable 12.32 419 0 Not Applicable 12.32 419 0 Not Applicable 12.31 409 - Not Applicable 12.32 419 + Not Applicable 12.31 409 - Not Applicable 12.31 409 0 Not Applicable 12.31 409 0 Not Applicable 12.31 409 0 Not Applicable 12.31 409 0 Not Applicable 12.31 409 0 Not Applicable 12.31 409 0 Not Applicable 12.31 409 0 Not Applicable 12.30 400 - Not Applicable 12.30 400 0 Not Applicable 12.30 400 0 Not Applicable 12.30 400 0 Not Applicable 12.30 400 0 Not Applicable 12.29 390 - Not Applicable 12.29 390 0 Not Applicable 12.29 390 0 Not Applicable 12.29 390 0 Not Applicable 12.28 381 - Not Applicable 12.28 381 0 Not Applicable 12.28 381 0 Not Applicable 12.28 381 0 Not Applicable 12.28 381 0 Not Applicable 12.28 381 0 Not Applicable 12.27 372 - Not Applicable 12.27 372 0 Not Applicable 12.28 381 + Not Applicable 12.28 381 0 Not Applicable 12.27 372 - Not Applicable 12.28 381 + Not Applicable 12.28 381 0 Not Applicable 12.27 372 - Not Applicable 12.27 372 0 Not Applicable 12.27 372 0 Not Applicable 12.26 364 - Not Applicable 12.27 372 + Not Applicable 12.26 364 - Not Applicable 12.26 364 0 Not Applicable 12.26 364 0 Not Applicable 12.26 364 0 Not Applicable 12.26 364 0 Not Applicable 12.25 355 - Not Applicable 12.26 364 + Not Applicable 12.25 355 - Not Applicable 12.25 355 0 Not Applicable 12.25 355 0 Not Applicable 12.25 355 0 Not Applicable 12.26 364 + Not Applicable 12.26 364 0 Not Applicable 12.27 372 + Not Applicable 12.28 381 + Not Applicable 12.29 390 + Not Applicable 12.30 400 + Not Applicable 12.31 409 + Not Applicable 12.32 419 + Not Applicable 12.32 419 0 Not Applicable 12.34 438 + Not Applicable 12.35 448 + Not Applicable 12.36 458 + Not Applicable 12.36 458 0 Not Applicable 12.37 469 + Not Applicable 12.38 479 + Not Applicable 12.38 479 0 Not Applicable 12.38 479 0 Not Applicable 12.38 479 0 Not Applicable 12.37 469 - Not Applicable 12.37 469 0 Not Applicable 12.37 469 0 Not Applicable 12.37 469 0 Not Applicable 12.38 479 + Not Applicable 12.39 490 + Not Applicable 12.40 500 + Not Applicable 12.41 510 + Not Applicable 12.40 500 - Not Applicable 12.41 510 + Not Applicable 12.41 510 0 Not Applicable 12.41 510 0 Not Applicable 12.40 500 - Not Applicable 12.40 500 0 Not Applicable 12.40 500 0 Not Applicable 12.40 500 0 Not Applicable 12.40 500 0 Not Applicable 12.40 500 0 Not Applicable 12.40 500 0 Not Applicable 12.40 500 0 Not Applicable 12.39 490 - Not Applicable 12.39 490 0 Not Applicable 12.38 479 - Not Applicable 12.38 479 0 Not Applicable 12.38 479 0 Not Applicable 12.37 469 - Not Applicable 12.37 469 0 Not Applicable 12.37 469 0 Not Applicable 12.37 469 0 Not Applicable 12.37 469 0 Not Applicable 12.37 469 0 Not Applicable 12.37 469 0 Not Applicable Stage (Feet) Flow (cfs) Trend Forecast Status ------------------------------------------------------------- 12.37 469 Not Applicable 12.36 458 - Not Applicable 12.36 458 0 Not Applicable 12.35 448 - Not Applicable 12.34 438 - Not Applicable 12.34 438 0 Not Applicable 12.33 428 - Not Applicable 12.33 428 0 Not Applicable 12.32 419 - Not Applicable 12.31 409 - Not Applicable 12.30 400 - Not Applicable 12.30 400 0 Not Applicable 12.29 390 - Not Applicable 12.29 390 0 Not Applicable 12.28 381 - Not Applicable 12.28 381 0 Not Applicable 12.28 381 0 Not Applicable 12.28 381 0 Not Applicable 12.27 372 - Not Applicable 12.27 372 0 Not Applicable 12.27 372 0 Not Applicable 12.26 364 - Not Applicable 12.26 364 0 Not Applicable 12.26 364 0 Not Applicable 12.26 364 0 Not Applicable 12.25 355 - Not Applicable 12.25 355 0 Not Applicable 12.25 355 0 Not Applicable 12.25 355 0 Not Applicable 12.24 346 - Not Applicable 12.24 346 0 Not Applicable 12.24 346 0 Not Applicable 12.24 346 0 Not Applicable 12.24 346 0 Not Applicable 12.23 338 - Not Applicable 12.23 338 0 Not Applicable 12.23 338 0 Not Applicable 12.23 338 0 Not Applicable 12.22 330 - Not Applicable 12.22 330 0 Not Applicable 12.22 330 0 Not Applicable 12.22 330 0 Not Applicable 12.22 330 0 Not Applicable 12.22 330 0 Not Applicable 12.22 330 0 Not Applicable 12.21 322 - Not Applicable 12.21 322 0 Not Applicable 12.21 322 0 Not Applicable 12.21 322 0 Not Applicable 12.21 322 0 Not Applicable 12.21 322 0 Not Applicable 12.21 322 0 Not Applicable 12.20 314 - Not Applicable 12.20 314 0 Not Applicable 12.20 314 0 Not Applicable 12.20 314 0 Not Applicable 12.20 314 0 Not Applicable 12.20 314 0 Not Applicable 12.20 314 0 Not Applicable 12.20 314 0 Not Applicable 12.19 306 - Not Applicable 12.19 306 0 Not Applicable 12.19 306 0 Not Applicable 12.19 306 0 Not Applicable 12.19 306 0 Not Applicable 12.19 306 0 Not Applicable 12.19 306 0 Not Applicable 12.19 306 0 Not Applicable 12.18 298 - Not Applicable 12.18 298 0 Not Applicable 12.18 298 0 Not Applicable 12.18 298 0 Not Applicable 12.18 298 0 Not Applicable 12.18 298 0 Not Applicable 12.18 298 0 Not Applicable 12.18 298 0 Not Applicable 12.18 298 0 Not Applicable 12.17 291 - Not Applicable 12.17 291 0 Not Applicable 12.17 291 0 Not Applicable 12.17 291 0 Not Applicable 12.17 291 0 Not Applicable 12.17 291 0 Not Applicable 12.17 291 0 Not Applicable 12.17 291 0 Not Applicable 12.16 283 - Not Applicable 12.16 283 0 Not Applicable 12.16 283 0 Not Applicable 12.16 283 0 Not Applicable 12.16 283 0 Not Applicable 12.16 283 0 Not Applicable 12.16 283 0 Not Applicable 12.16 283 0 Not Applicable 12.16 283 0 Not Applicable 12.16 283 0 Not Applicable 12.16 283 0 Not Applicable 12.15 276 - Not Applicable 12.15 276 0 Not Applicable 12.15 276 0 Not Applicable 12.15 276 0 Not Applicable 12.15 276 0 Not Applicable 12.15 276 0 Not Applicable 12.15 276 0 Not Applicable 12.15 276 0 Not Applicable 12.15 276 0 Not Applicable 12.15 276 0 Not Applicable 12.15 276 0 Not Applicable 12.15 276 0 Not Applicable 12.14 269 - Not Applicable 12.14 269 0 Not Applicable 12.14 269 0 Not Applicable 12.14 269 0 Not Applicable 12.14 269 0 Not Applicable 12.14 269 0 Not Applicable 12.14 269 0 Not Applicable 12.14 269 0 Not Applicable 12.14 269 0 Not Applicable 12.14 269 0 Not Applicable 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">