# Tabular Observed and Forecast Hydrograph Information
#
# Location: Mattole River - Petrolia (MTOC1)
#
# File Generation Time: 04/18/2026 at 08:45 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/13/2026 at 08:00 AM PDT
# Maximum Observed Stage: 12.92 Feet
# Maximum Observed Flow: 1054 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/21/2026 at 10:00 PM PDT
# Maximum Forecast Stage: 13.71 Feet
# Maximum Forecast Flow: 1920 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/13/2026 08 AM PDT 12.92 1054 Not Applicable
04/13/2026 09 AM PDT 12.90 1031 - Not Applicable
04/13/2026 10 AM PDT 12.89 1020 - Not Applicable
04/13/2026 11 AM PDT 12.86 986 - Not Applicable
04/13/2026 12 PM PDT 12.86 986 0 Not Applicable
04/13/2026 01 PM PDT 12.84 964 - Not Applicable
04/13/2026 02 PM PDT 12.82 942 - Not Applicable
04/13/2026 03 PM PDT 12.80 920 - Not Applicable
04/13/2026 04 PM PDT 12.80 920 0 Not Applicable
04/13/2026 05 PM PDT 12.78 898 - Not Applicable
04/13/2026 06 PM PDT 12.76 876 - Not Applicable
04/13/2026 07 PM PDT 12.75 865 - Not Applicable
04/13/2026 08 PM PDT 12.74 854 - Not Applicable
04/13/2026 09 PM PDT 12.73 843 - Not Applicable
04/13/2026 10 PM PDT 12.71 821 - Not Applicable
04/13/2026 11 PM PDT 12.71 821 0 Not Applicable
04/14/2026 12 AM PDT 12.69 800 - Not Applicable
04/14/2026 01 AM PDT 12.67 778 - Not Applicable
04/14/2026 02 AM PDT 12.67 778 0 Not Applicable
04/14/2026 03 AM PDT 12.66 768 - Not Applicable
04/14/2026 04 AM PDT 12.65 757 - Not Applicable
04/14/2026 05 AM PDT 12.63 736 - Not Applicable
04/14/2026 06 AM PDT 12.63 736 0 Not Applicable
04/14/2026 07 AM PDT 12.61 715 - Not Applicable
04/14/2026 08 AM PDT 12.61 715 0 Not Applicable
04/14/2026 09 AM PDT 12.61 715 0 Not Applicable
04/14/2026 10 AM PDT 12.60 704 - Not Applicable
04/14/2026 11 AM PDT 12.59 694 - Not Applicable
04/14/2026 12 PM PDT 12.59 694 0 Not Applicable
04/14/2026 01 PM PDT 12.58 683 - Not Applicable
04/14/2026 02 PM PDT 12.59 694 + Not Applicable
04/14/2026 03 PM PDT 12.57 673 - Not Applicable
04/14/2026 04 PM PDT 12.57 673 0 Not Applicable
04/14/2026 05 PM PDT 12.55 652 - Not Applicable
04/14/2026 06 PM PDT 12.55 652 0 Not Applicable
04/14/2026 07 PM PDT 12.54 641 - Not Applicable
04/14/2026 08 PM PDT 12.54 641 0 Not Applicable
04/14/2026 09 PM PDT 12.53 631 - Not Applicable
04/14/2026 10 PM PDT 12.52 621 - Not Applicable
04/14/2026 11 PM PDT 12.52 621 0 Not Applicable
04/15/2026 12 AM PDT 12.51 610 - Not Applicable
04/15/2026 01 AM PDT 12.51 610 0 Not Applicable
04/15/2026 02 AM PDT 12.50 600 - Not Applicable
04/15/2026 03 AM PDT 12.50 600 0 Not Applicable
04/15/2026 04 AM PDT 12.49 590 - Not Applicable
04/15/2026 05 AM PDT 12.49 590 0 Not Applicable
04/15/2026 06 AM PDT 12.48 580 - Not Applicable
04/15/2026 07 AM PDT 12.48 580 0 Not Applicable
04/15/2026 08 AM PDT 12.47 570 - Not Applicable
04/15/2026 09 AM PDT 12.47 570 0 Not Applicable
04/15/2026 10 AM PDT 12.47 570 0 Not Applicable
04/15/2026 11 AM PDT 12.47 570 0 Not Applicable
04/15/2026 12 PM PDT 12.46 560 - Not Applicable
04/15/2026 01 PM PDT 12.47 570 + Not Applicable
04/15/2026 02 PM PDT 12.47 570 0 Not Applicable
04/15/2026 03 PM PDT 12.47 570 0 Not Applicable
04/15/2026 04 PM PDT 12.47 570 0 Not Applicable
04/15/2026 05 PM PDT 12.47 570 0 Not Applicable
04/15/2026 06 PM PDT 12.46 560 - Not Applicable
04/15/2026 07 PM PDT 12.46 560 0 Not Applicable
04/15/2026 08 PM PDT 12.46 560 0 Not Applicable
04/15/2026 09 PM PDT 12.46 560 0 Not Applicable
04/15/2026 10 PM PDT 12.44 540 - Not Applicable
04/15/2026 11 PM PDT 12.45 550 + Not Applicable
04/16/2026 12 AM PDT 12.45 550 0 Not Applicable
04/16/2026 01 AM PDT 12.45 550 0 Not Applicable
04/16/2026 02 AM PDT 12.45 550 0 Not Applicable
04/16/2026 03 AM PDT 12.45 550 0 Not Applicable
04/16/2026 04 AM PDT 12.44 540 - Not Applicable
04/16/2026 05 AM PDT 12.44 540 0 Not Applicable
04/16/2026 06 AM PDT 12.44 540 0 Not Applicable
04/16/2026 07 AM PDT 12.43 530 - Not Applicable
04/16/2026 08 AM PDT 12.43 530 0 Not Applicable
04/16/2026 09 AM PDT 12.43 530 0 Not Applicable
04/16/2026 10 AM PDT 12.43 530 0 Not Applicable
04/16/2026 11 AM PDT 12.43 530 0 Not Applicable
04/16/2026 12 PM PDT 12.43 530 0 Not Applicable
04/16/2026 01 PM PDT 12.43 530 0 Not Applicable
04/16/2026 02 PM PDT 12.42 520 - Not Applicable
04/16/2026 03 PM PDT 12.41 510 - Not Applicable
04/16/2026 04 PM PDT 12.42 520 + Not Applicable
04/16/2026 05 PM PDT 12.41 510 - Not Applicable
04/16/2026 06 PM PDT 12.41 510 0 Not Applicable
04/16/2026 07 PM PDT 12.40 500 - Not Applicable
04/16/2026 08 PM PDT 12.40 500 0 Not Applicable
04/16/2026 09 PM PDT 12.40 500 0 Not Applicable
04/16/2026 10 PM PDT 12.39 490 - Not Applicable
04/16/2026 11 PM PDT 12.39 490 0 Not Applicable
04/17/2026 12 AM PDT 12.39 490 0 Not Applicable
04/17/2026 01 AM PDT 12.38 479 - Not Applicable
04/17/2026 02 AM PDT 12.37 469 - Not Applicable
04/17/2026 03 AM PDT 12.38 479 + Not Applicable
04/17/2026 04 AM PDT 12.37 469 - Not Applicable
04/17/2026 05 AM PDT 12.36 458 - Not Applicable
04/17/2026 06 AM PDT 12.37 469 + Not Applicable
04/17/2026 07 AM PDT 12.36 458 - Not Applicable
04/17/2026 08 AM PDT 12.36 458 0 Not Applicable
04/17/2026 09 AM PDT 12.36 458 0 Not Applicable
04/17/2026 10 AM PDT 12.35 448 - Not Applicable
04/17/2026 11 AM PDT 12.35 448 0 Not Applicable
04/17/2026 12 PM PDT 12.36 458 + Not Applicable
04/17/2026 01 PM PDT 12.36 458 0 Not Applicable
04/17/2026 02 PM PDT 12.36 458 0 Not Applicable
04/17/2026 03 PM PDT 12.35 448 - Not Applicable
04/17/2026 04 PM PDT 12.35 448 0 Not Applicable
04/17/2026 05 PM PDT 12.35 448 0 Not Applicable
04/17/2026 06 PM PDT 12.35 448 0 Not Applicable
04/17/2026 07 PM PDT 12.34 438 - Not Applicable
04/17/2026 08 PM PDT 12.34 438 0 Not Applicable
04/17/2026 09 PM PDT 12.33 428 - Not Applicable
04/17/2026 10 PM PDT 12.33 428 0 Not Applicable
04/17/2026 11 PM PDT 12.33 428 0 Not Applicable
04/18/2026 12 AM PDT 12.33 428 0 Not Applicable
04/18/2026 01 AM PDT 12.32 419 - Not Applicable
04/18/2026 02 AM PDT 12.32 419 0 Not Applicable
04/18/2026 03 AM PDT 12.32 419 0 Not Applicable
04/18/2026 04 AM PDT 12.32 419 0 Not Applicable
04/18/2026 05 AM PDT 12.32 419 0 Not Applicable
04/18/2026 06 AM PDT 12.32 419 0 Not Applicable
04/18/2026 07 AM PDT 12.32 419 0 Not Applicable
04/18/2026 08 AM PDT 12.31 409 - Not Applicable
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/18/2026 09 AM PDT 12.31 409 Not Applicable
04/18/2026 10 AM PDT 12.31 409 0 Not Applicable
04/18/2026 11 AM PDT 12.31 409 0 Not Applicable
04/18/2026 12 PM PDT 12.31 409 0 Not Applicable
04/18/2026 01 PM PDT 12.30 400 - Not Applicable
04/18/2026 02 PM PDT 12.30 400 0 Not Applicable
04/18/2026 03 PM PDT 12.30 400 0 Not Applicable
04/18/2026 04 PM PDT 12.30 400 0 Not Applicable
04/18/2026 05 PM PDT 12.30 400 0 Not Applicable
04/18/2026 06 PM PDT 12.30 400 0 Not Applicable
04/18/2026 07 PM PDT 12.29 390 - Not Applicable
04/18/2026 08 PM PDT 12.29 390 0 Not Applicable
04/18/2026 09 PM PDT 12.29 390 0 Not Applicable
04/18/2026 10 PM PDT 12.29 390 0 Not Applicable
04/18/2026 11 PM PDT 12.29 390 0 Not Applicable
04/19/2026 12 AM PDT 12.29 390 0 Not Applicable
04/19/2026 01 AM PDT 12.29 390 0 Not Applicable
04/19/2026 02 AM PDT 12.28 381 - Not Applicable
04/19/2026 03 AM PDT 12.28 381 0 Not Applicable
04/19/2026 04 AM PDT 12.28 381 0 Not Applicable
04/19/2026 05 AM PDT 12.28 381 0 Not Applicable
04/19/2026 06 AM PDT 12.28 381 0 Not Applicable
04/19/2026 07 AM PDT 12.28 381 0 Not Applicable
04/19/2026 08 AM PDT 12.27 372 - Not Applicable
04/19/2026 09 AM PDT 12.27 372 0 Not Applicable
04/19/2026 10 AM PDT 12.27 372 0 Not Applicable
04/19/2026 11 AM PDT 12.27 372 0 Not Applicable
04/19/2026 12 PM PDT 12.27 372 0 Not Applicable
04/19/2026 01 PM PDT 12.27 372 0 Not Applicable
04/19/2026 02 PM PDT 12.27 372 0 Not Applicable
04/19/2026 03 PM PDT 12.26 364 - Not Applicable
04/19/2026 04 PM PDT 12.26 364 0 Not Applicable
04/19/2026 05 PM PDT 12.26 364 0 Not Applicable
04/19/2026 06 PM PDT 12.26 364 0 Not Applicable
04/19/2026 07 PM PDT 12.26 364 0 Not Applicable
04/19/2026 08 PM PDT 12.26 364 0 Not Applicable
04/19/2026 09 PM PDT 12.25 355 - Not Applicable
04/19/2026 10 PM PDT 12.25 355 0 Not Applicable
04/19/2026 11 PM PDT 12.25 355 0 Not Applicable
04/20/2026 12 AM PDT 12.25 355 0 Not Applicable
04/20/2026 01 AM PDT 12.25 355 0 Not Applicable
04/20/2026 02 AM PDT 12.25 355 0 Not Applicable
04/20/2026 03 AM PDT 12.24 346 - Not Applicable
04/20/2026 04 AM PDT 12.24 346 0 Not Applicable
04/20/2026 05 AM PDT 12.24 346 0 Not Applicable
04/20/2026 06 AM PDT 12.24 346 0 Not Applicable
04/20/2026 07 AM PDT 12.24 346 0 Not Applicable
04/20/2026 08 AM PDT 12.24 346 0 Not Applicable
04/20/2026 09 AM PDT 12.24 346 0 Not Applicable
04/20/2026 10 AM PDT 12.23 338 - Not Applicable
04/20/2026 11 AM PDT 12.23 338 0 Not Applicable
04/20/2026 12 PM PDT 12.23 338 0 Not Applicable
04/20/2026 01 PM PDT 12.23 338 0 Not Applicable
04/20/2026 02 PM PDT 12.23 338 0 Not Applicable
04/20/2026 03 PM PDT 12.23 338 0 Not Applicable
04/20/2026 04 PM PDT 12.24 346 + Not Applicable
04/20/2026 05 PM PDT 12.26 364 + Not Applicable
04/20/2026 06 PM PDT 12.34 438 + Not Applicable
04/20/2026 07 PM PDT 12.46 560 + Not Applicable
04/20/2026 08 PM PDT 12.62 725 + Not Applicable
04/20/2026 09 PM PDT 12.89 1020 + Not Applicable
04/20/2026 10 PM PDT 13.41 1584 + Not Applicable
04/20/2026 11 PM PDT 13.49 1673 + Not Applicable
04/21/2026 12 AM PDT 13.56 1751 + Not Applicable
04/21/2026 01 AM PDT 13.60 1796 + Not Applicable
04/21/2026 02 AM PDT 13.62 1818 + Not Applicable
04/21/2026 03 AM PDT 13.64 1841 + Not Applicable
04/21/2026 04 AM PDT 13.64 1841 0 Not Applicable
04/21/2026 05 AM PDT 13.65 1852 + Not Applicable
04/21/2026 06 AM PDT 13.66 1864 + Not Applicable
04/21/2026 07 AM PDT 13.66 1864 0 Not Applicable
04/21/2026 08 AM PDT 13.67 1875 + Not Applicable
04/21/2026 09 AM PDT 13.67 1875 0 Not Applicable
04/21/2026 10 AM PDT 13.67 1875 0 Not Applicable
04/21/2026 11 AM PDT 13.67 1875 0 Not Applicable
04/21/2026 12 PM PDT 13.67 1875 0 Not Applicable
04/21/2026 01 PM PDT 13.67 1875 0 Not Applicable
04/21/2026 02 PM PDT 13.67 1875 0 Not Applicable
04/21/2026 03 PM PDT 13.66 1864 - Not Applicable
04/21/2026 04 PM PDT 13.66 1864 0 Not Applicable
04/21/2026 05 PM PDT 13.67 1875 + Not Applicable
04/21/2026 06 PM PDT 13.67 1875 0 Not Applicable
04/21/2026 07 PM PDT 13.68 1886 + Not Applicable
04/21/2026 08 PM PDT 13.69 1898 + Not Applicable
04/21/2026 09 PM PDT 13.70 1909 + Not Applicable
04/21/2026 10 PM PDT 13.71 1920 + Not Applicable
04/21/2026 11 PM PDT 13.71 1920 0 Not Applicable
04/22/2026 12 AM PDT 13.70 1909 - Not Applicable
04/22/2026 01 AM PDT 13.68 1886 - Not Applicable
04/22/2026 02 AM PDT 13.65 1852 - Not Applicable
04/22/2026 03 AM PDT 13.61 1807 - Not Applicable
04/22/2026 04 AM PDT 13.57 1762 - Not Applicable
04/22/2026 05 AM PDT 13.54 1728 - Not Applicable
04/22/2026 06 AM PDT 13.51 1695 - Not Applicable
04/22/2026 07 AM PDT 13.48 1662 - Not Applicable
04/22/2026 08 AM PDT 13.45 1628 - Not Applicable
04/22/2026 09 AM PDT 13.42 1595 - Not Applicable
04/22/2026 10 AM PDT 13.39 1562 - Not Applicable
04/22/2026 11 AM PDT 13.36 1529 - Not Applicable
04/22/2026 12 PM PDT 13.33 1497 - Not Applicable
04/22/2026 01 PM PDT 13.30 1464 - Not Applicable
04/22/2026 02 PM PDT 13.27 1431 - Not Applicable
04/22/2026 03 PM PDT 13.22 1377 - Not Applicable
04/22/2026 04 PM PDT 13.19 1345 - Not Applicable
04/22/2026 05 PM PDT 13.15 1303 - Not Applicable
04/22/2026 06 PM PDT 13.11 1260 - Not Applicable
04/22/2026 07 PM PDT 13.13 1281 + Not Applicable
04/22/2026 08 PM PDT 13.07 1218 - Not Applicable
04/22/2026 09 PM PDT 13.03 1176 - Not Applicable
04/22/2026 10 PM PDT 13.00 1145 - Not Applicable
04/22/2026 11 PM PDT 12.98 1122 - Not Applicable
04/23/2026 12 AM PDT 12.97 1110 - Not Applicable
04/23/2026 01 AM PDT 12.95 1088 - Not Applicable
04/23/2026 02 AM PDT 12.94 1076 - Not Applicable
04/23/2026 03 AM PDT 12.92 1054 - Not Applicable
04/23/2026 04 AM PDT 12.90 1031 - Not Applicable
04/23/2026 05 AM PDT 12.89 1020 - 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.
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