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YUBA RIVER - MARYSVILLE (MRYC1)
| Latitude: 39.18º N | Longitude: 121.52º W | Elevation: 88 Feet | | Forecast Type: Official Location |
| Location: Yuba County in California | Bulletin Group: Lower Sacramento | River Group: Feather Yuba |
| Issuance Time: | May 18 2026 at 7:39 AM PDT | Next Issuance: | May 19 2026 at 9:00 AM PDT
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| Action/Monitor: 74.0 Feet | Minor Flood: 87.0 Feet | Moderate Flood: 90.0 Feet | Major Flood: 91.0 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Yuba River - Marysville (MRYC1)
#
# File Generation Time: 05/18/2026 at 07:39 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 05/13/2026 at 07:00 AM PDT
# Maximum Observed Stage: 62.50 Feet
# Maximum Observed Flow: 1863 cfs
#
# Earliest Date & Time of Maximum Forecast: 05/23/2026 at 01:00 AM PDT
# Maximum Forecast Stage: 62.14 Feet
# Maximum Forecast Flow: 1483 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
05/13/2026 07 AM PDT 62.50 1863 Normal
05/13/2026 08 AM PDT 62.49 1851 - Normal
05/13/2026 09 AM PDT 62.47 1829 - Normal
05/13/2026 10 AM PDT 62.48 1840 + Normal
05/13/2026 11 AM PDT 62.48 1840 0 Normal
05/13/2026 12 PM PDT 62.49 1851 + Normal
05/13/2026 01 PM PDT 62.46 1818 - Normal
05/13/2026 02 PM PDT 62.46 1818 0 Normal
05/13/2026 03 PM PDT 62.44 1796 - Normal
05/13/2026 04 PM PDT 62.45 1807 + Normal
05/13/2026 05 PM PDT 62.42 1774 - Normal
05/13/2026 06 PM PDT 62.43 1785 + Normal
05/13/2026 07 PM PDT 62.44 1796 + Normal
05/13/2026 08 PM PDT 62.42 1774 - Normal
05/13/2026 09 PM PDT 62.40 1753 - Normal
05/13/2026 10 PM PDT 62.42 1774 + Normal
05/13/2026 11 PM PDT 62.42 1774 0 Normal
05/14/2026 12 AM PDT 62.39 1742 - Normal
05/14/2026 01 AM PDT 62.42 1774 + Normal
05/14/2026 02 AM PDT 62.40 1753 - Normal
05/14/2026 03 AM PDT 62.41 1763 + Normal
05/14/2026 04 AM PDT 62.41 1763 0 Normal
05/14/2026 05 AM PDT 62.41 1763 0 Normal
05/14/2026 06 AM PDT 62.42 1774 + Normal
05/14/2026 07 AM PDT 62.41 1763 - Normal
05/14/2026 08 AM PDT 62.40 1753 - Normal
05/14/2026 09 AM PDT 62.40 1753 0 Normal
05/14/2026 10 AM PDT 62.41 1763 + Normal
05/14/2026 11 AM PDT 62.41 1763 0 Normal
05/14/2026 12 PM PDT 62.41 1763 0 Normal
05/14/2026 01 PM PDT 62.41 1763 0 Normal
05/14/2026 02 PM PDT 62.40 1753 - Normal
05/14/2026 03 PM PDT 62.40 1753 0 Normal
05/14/2026 04 PM PDT 62.40 1753 0 Normal
05/14/2026 05 PM PDT 62.40 1753 0 Normal
05/14/2026 06 PM PDT 62.37 1720 - Normal
05/14/2026 07 PM PDT 62.33 1678 - Normal
05/14/2026 08 PM PDT 62.32 1667 - Normal
05/14/2026 09 PM PDT 62.30 1646 - Normal
05/14/2026 10 PM PDT 62.31 1657 + Normal
05/14/2026 11 PM PDT 62.31 1657 0 Normal
05/15/2026 12 AM PDT 62.30 1646 - Normal
05/15/2026 01 AM PDT 62.32 1667 + Normal
05/15/2026 02 AM PDT 62.30 1646 - Normal
05/15/2026 03 AM PDT 62.30 1646 0 Normal
05/15/2026 04 AM PDT 62.30 1646 0 Normal
05/15/2026 05 AM PDT 62.30 1646 0 Normal
05/15/2026 06 AM PDT 62.30 1646 0 Normal
05/15/2026 07 AM PDT 62.29 1636 - Normal
05/15/2026 08 AM PDT 62.30 1646 + Normal
05/15/2026 09 AM PDT 62.30 1646 0 Normal
05/15/2026 10 AM PDT 62.30 1646 0 Normal
05/15/2026 11 AM PDT 62.28 1625 - Normal
05/15/2026 12 PM PDT 62.24 1584 - Normal
05/15/2026 01 PM PDT 62.22 1563 - Normal
05/15/2026 02 PM PDT 62.20 1543 - Normal
05/15/2026 03 PM PDT 62.21 1553 + Normal
05/15/2026 04 PM PDT 62.21 1553 0 Normal
05/15/2026 05 PM PDT 62.20 1543 - Normal
05/15/2026 06 PM PDT 62.20 1543 0 Normal
05/15/2026 07 PM PDT 62.20 1543 0 Normal
05/15/2026 08 PM PDT 62.20 1543 0 Normal
05/15/2026 09 PM PDT 62.20 1543 0 Normal
05/15/2026 10 PM PDT 62.20 1543 0 Normal
05/15/2026 11 PM PDT 62.20 1543 0 Normal
05/16/2026 12 AM PDT 62.21 1553 + Normal
05/16/2026 01 AM PDT 62.19 1533 - Normal
05/16/2026 02 AM PDT 62.19 1533 0 Normal
05/16/2026 03 AM PDT 62.18 1523 - Normal
05/16/2026 04 AM PDT 62.19 1533 + Normal
05/16/2026 05 AM PDT 62.19 1533 0 Normal
05/16/2026 06 AM PDT 62.19 1533 0 Normal
05/16/2026 07 AM PDT 62.19 1533 0 Normal
05/16/2026 08 AM PDT 62.19 1533 0 Normal
05/16/2026 09 AM PDT 62.17 1513 - Normal
05/16/2026 10 AM PDT 62.15 1493 - Normal
05/16/2026 11 AM PDT 62.17 1513 + Normal
05/16/2026 12 PM PDT 62.17 1513 0 Normal
05/16/2026 01 PM PDT 62.16 1503 - Normal
05/16/2026 02 PM PDT 62.17 1513 + Normal
05/16/2026 03 PM PDT 62.19 1533 + Normal
05/16/2026 04 PM PDT 62.18 1523 - Normal
05/16/2026 05 PM PDT 62.17 1513 - Normal
05/16/2026 06 PM PDT 62.16 1503 - Normal
05/16/2026 07 PM PDT 62.17 1513 + Normal
05/16/2026 08 PM PDT 62.15 1493 - Normal
05/16/2026 09 PM PDT 62.16 1503 + Normal
05/16/2026 10 PM PDT 62.16 1503 0 Normal
05/16/2026 11 PM PDT 62.16 1503 0 Normal
05/17/2026 12 AM PDT 62.16 1503 0 Normal
05/17/2026 01 AM PDT 62.16 1503 0 Normal
05/17/2026 02 AM PDT 62.16 1503 0 Normal
05/17/2026 03 AM PDT 62.16 1503 0 Normal
05/17/2026 04 AM PDT 62.16 1503 0 Normal
05/17/2026 05 AM PDT 62.16 1503 0 Normal
05/17/2026 06 AM PDT 62.17 1513 + Normal
05/17/2026 07 AM PDT 62.17 1513 0 Normal
05/17/2026 08 AM PDT 62.15 1493 - Normal
05/17/2026 09 AM PDT 62.18 1523 + Normal
05/17/2026 10 AM PDT 62.17 1513 - Normal
05/17/2026 11 AM PDT 62.16 1503 - Normal
05/17/2026 12 PM PDT 62.15 1493 - Normal
05/17/2026 01 PM PDT 62.14 1483 - Normal
05/17/2026 02 PM PDT 62.09 1434 - Normal
05/17/2026 03 PM PDT 62.06 1405 - Normal
05/17/2026 04 PM PDT 62.04 1385 - Normal
05/17/2026 05 PM PDT 62.02 1366 - Normal
05/17/2026 06 PM PDT 62.01 1357 - Normal
05/17/2026 07 PM PDT 62.02 1366 + Normal
05/17/2026 08 PM PDT 61.99 1337 - Normal
05/17/2026 09 PM PDT 61.99 1337 0 Normal
05/17/2026 10 PM PDT 61.99 1337 0 Normal
05/17/2026 11 PM PDT 61.99 1337 0 Normal
05/18/2026 12 AM PDT 62.00 1347 + Normal
05/18/2026 01 AM PDT 62.00 1347 0 Normal
05/18/2026 02 AM PDT 61.98 1327 - Normal
05/18/2026 03 AM PDT 61.99 1337 + Normal
05/18/2026 04 AM PDT 61.99 1337 0 Normal
05/18/2026 05 AM PDT 61.97 1316 - Normal
05/18/2026 06 AM PDT 61.97 1316 0 Normal
05/18/2026 07 AM PDT 61.98 1327 + Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
05/18/2026 08 AM PDT 61.98 1327 Normal
05/18/2026 09 AM PDT 61.98 1327 0 Normal
05/18/2026 10 AM PDT 62.01 1357 + Normal
05/18/2026 11 AM PDT 62.00 1347 - Normal
05/18/2026 12 PM PDT 61.99 1337 - Normal
05/18/2026 01 PM PDT 61.99 1337 0 Normal
05/18/2026 02 PM PDT 62.00 1347 + Normal
05/18/2026 03 PM PDT 62.00 1347 0 Normal
05/18/2026 04 PM PDT 62.00 1347 0 Normal
05/18/2026 05 PM PDT 62.01 1357 + Normal
05/18/2026 06 PM PDT 62.02 1366 + Normal
05/18/2026 07 PM PDT 62.02 1366 0 Normal
05/18/2026 08 PM PDT 62.00 1347 - Normal
05/18/2026 09 PM PDT 62.00 1347 0 Normal
05/18/2026 10 PM PDT 62.02 1366 + Normal
05/18/2026 11 PM PDT 62.02 1366 0 Normal
05/19/2026 12 AM PDT 62.00 1347 - Normal
05/19/2026 01 AM PDT 61.99 1337 - Normal
05/19/2026 02 AM PDT 62.00 1347 + Normal
05/19/2026 03 AM PDT 62.01 1357 + Normal
05/19/2026 04 AM PDT 62.01 1357 0 Normal
05/19/2026 05 AM PDT 62.01 1357 0 Normal
05/19/2026 06 AM PDT 62.02 1366 + Normal
05/19/2026 07 AM PDT 62.03 1376 + Normal
05/19/2026 08 AM PDT 62.03 1376 0 Normal
05/19/2026 09 AM PDT 62.02 1366 - Normal
05/19/2026 10 AM PDT 62.01 1357 - Normal
05/19/2026 11 AM PDT 62.01 1357 0 Normal
05/19/2026 12 PM PDT 62.02 1366 + Normal
05/19/2026 01 PM PDT 62.02 1366 0 Normal
05/19/2026 02 PM PDT 62.04 1385 + Normal
05/19/2026 03 PM PDT 62.04 1385 0 Normal
05/19/2026 04 PM PDT 62.02 1366 - Normal
05/19/2026 05 PM PDT 62.01 1357 - Normal
05/19/2026 06 PM PDT 62.00 1347 - Normal
05/19/2026 07 PM PDT 62.01 1357 + Normal
05/19/2026 08 PM PDT 62.02 1366 + Normal
05/19/2026 09 PM PDT 62.02 1366 0 Normal
05/19/2026 10 PM PDT 62.03 1376 + Normal
05/19/2026 11 PM PDT 62.03 1376 0 Normal
05/20/2026 12 AM PDT 62.03 1376 0 Normal
05/20/2026 01 AM PDT 62.04 1385 + Normal
05/20/2026 02 AM PDT 62.05 1395 + Normal
05/20/2026 03 AM PDT 62.05 1395 0 Normal
05/20/2026 04 AM PDT 62.04 1385 - Normal
05/20/2026 05 AM PDT 62.03 1376 - Normal
05/20/2026 06 AM PDT 62.02 1366 - Normal
05/20/2026 07 AM PDT 62.03 1376 + Normal
05/20/2026 08 AM PDT 62.04 1385 + Normal
05/20/2026 09 AM PDT 62.04 1385 0 Normal
05/20/2026 10 AM PDT 62.05 1395 + Normal
05/20/2026 11 AM PDT 62.05 1395 0 Normal
05/20/2026 12 PM PDT 62.05 1395 0 Normal
05/20/2026 01 PM PDT 62.05 1395 0 Normal
05/20/2026 02 PM PDT 62.07 1414 + Normal
05/20/2026 03 PM PDT 62.07 1414 0 Normal
05/20/2026 04 PM PDT 62.05 1395 - Normal
05/20/2026 05 PM PDT 62.04 1385 - Normal
05/20/2026 06 PM PDT 62.05 1395 + Normal
05/20/2026 07 PM PDT 62.05 1395 0 Normal
05/20/2026 08 PM PDT 62.04 1385 - Normal
05/20/2026 09 PM PDT 62.05 1395 + Normal
05/20/2026 10 PM PDT 62.07 1414 + Normal
05/20/2026 11 PM PDT 62.07 1414 0 Normal
05/21/2026 12 AM PDT 62.05 1395 - Normal
05/21/2026 01 AM PDT 62.05 1395 0 Normal
05/21/2026 02 AM PDT 62.05 1395 0 Normal
05/21/2026 03 AM PDT 62.06 1405 + Normal
05/21/2026 04 AM PDT 62.06 1405 0 Normal
05/21/2026 05 AM PDT 62.07 1414 + Normal
05/21/2026 06 AM PDT 62.07 1414 0 Normal
05/21/2026 07 AM PDT 62.09 1434 + Normal
05/21/2026 08 AM PDT 62.09 1434 0 Normal
05/21/2026 09 AM PDT 62.07 1414 - Normal
05/21/2026 10 AM PDT 62.06 1405 - Normal
05/21/2026 11 AM PDT 62.07 1414 + Normal
05/21/2026 12 PM PDT 62.07 1414 0 Normal
05/21/2026 01 PM PDT 62.08 1424 + Normal
05/21/2026 02 PM PDT 62.08 1424 0 Normal
05/21/2026 03 PM PDT 62.09 1434 + Normal
05/21/2026 04 PM PDT 62.10 1443 + Normal
05/21/2026 05 PM PDT 62.10 1443 0 Normal
05/21/2026 06 PM PDT 62.08 1424 - Normal
05/21/2026 07 PM PDT 62.07 1414 - Normal
05/21/2026 08 PM PDT 62.06 1405 - Normal
05/21/2026 09 PM PDT 62.07 1414 + Normal
05/21/2026 10 PM PDT 62.08 1424 + Normal
05/21/2026 11 PM PDT 62.08 1424 0 Normal
05/22/2026 12 AM PDT 62.09 1434 + Normal
05/22/2026 01 AM PDT 62.09 1434 0 Normal
05/22/2026 02 AM PDT 62.09 1434 0 Normal
05/22/2026 03 AM PDT 62.10 1443 + Normal
05/22/2026 04 AM PDT 62.11 1453 + Normal
05/22/2026 05 AM PDT 62.11 1453 0 Normal
05/22/2026 06 AM PDT 62.09 1434 - Normal
05/22/2026 07 AM PDT 62.08 1424 - Normal
05/22/2026 08 AM PDT 62.09 1434 + Normal
05/22/2026 09 AM PDT 62.10 1443 + Normal
05/22/2026 10 AM PDT 62.10 1443 0 Normal
05/22/2026 11 AM PDT 62.10 1443 0 Normal
05/22/2026 12 PM PDT 62.11 1453 + Normal
05/22/2026 01 PM PDT 62.12 1463 + Normal
05/22/2026 02 PM PDT 62.12 1463 0 Normal
05/22/2026 03 PM PDT 62.11 1453 - Normal
05/22/2026 04 PM PDT 62.10 1443 - Normal
05/22/2026 05 PM PDT 62.09 1434 - Normal
05/22/2026 06 PM PDT 62.09 1434 0 Normal
05/22/2026 07 PM PDT 62.10 1443 + Normal
05/22/2026 08 PM PDT 62.11 1453 + Normal
05/22/2026 09 PM PDT 62.11 1453 0 Normal
05/22/2026 10 PM PDT 62.11 1453 0 Normal
05/22/2026 11 PM PDT 62.12 1463 + Normal
05/23/2026 12 AM PDT 62.12 1463 0 Normal
05/23/2026 01 AM PDT 62.14 1483 + Normal
05/23/2026 02 AM PDT 62.13 1473 - Normal
05/23/2026 03 AM PDT 62.12 1463 - Normal
05/23/2026 04 AM PDT 62.11 1453 - Normal
05/23/2026 05 AM PDT 62.11 1453 0 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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