National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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KLAMATH RIVER - IRON GATE (IRGC1)
Latitude: 41.93º NLongitude: 122.44º WElevation: 2162 FeetForecast Type: Unofficial Location
Location: Siskiyou County in CaliforniaBulletin Group: North CoastRiver Group: Klamath
Issuance Time: Apr 08 2026 at 1:43 PM PDTNext Issuance: Apr 09 2026 at 9:00 AM PDT
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Klamath River - Iron Gate (IRGC1)
#
# File Generation Time:  04/08/2026 at 01:45 PM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/08/2026 at 05:00 AM PDT
# Maximum Observed Stage:                       2.48 Feet
# Maximum Observed Flow:                        1382 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/11/2026 at 11:00 PM PDT
# Maximum Forecast Stage:                       3.10 Feet
# Maximum Forecast Flow:                        1848 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  04/03/2026 01 PM PDT            2.35           1293                Not Applicable
  04/03/2026 02 PM PDT            2.36           1300         +      Not Applicable
  04/03/2026 03 PM PDT            2.34           1286         -      Not Applicable
  04/03/2026 04 PM PDT            2.36           1300         +      Not Applicable
  04/03/2026 05 PM PDT            2.34           1286         -      Not Applicable
  04/03/2026 06 PM PDT            2.35           1293         +      Not Applicable
  04/03/2026 07 PM PDT            2.38           1313         +      Not Applicable
  04/03/2026 08 PM PDT            2.40           1327         +      Not Applicable
  04/03/2026 09 PM PDT            2.40           1327         0      Not Applicable
  04/03/2026 10 PM PDT            2.40           1327         0      Not Applicable
  04/03/2026 11 PM PDT            2.40           1327         0      Not Applicable
  04/04/2026 12 AM PDT            2.42           1341         +      Not Applicable
  04/04/2026 01 AM PDT            2.40           1327         -      Not Applicable
  04/04/2026 02 AM PDT            2.41           1334         +      Not Applicable
  04/04/2026 03 AM PDT            2.40           1327         -      Not Applicable
  04/04/2026 04 AM PDT            2.41           1334         +      Not Applicable
  04/04/2026 05 AM PDT            2.40           1327         -      Not Applicable
  04/04/2026 06 AM PDT            2.41           1334         +      Not Applicable
  04/04/2026 07 AM PDT            2.40           1327         -      Not Applicable
  04/04/2026 08 AM PDT            2.40           1327         0      Not Applicable
  04/04/2026 09 AM PDT            2.40           1327         0      Not Applicable
  04/04/2026 10 AM PDT            2.42           1341         +      Not Applicable
  04/04/2026 11 AM PDT            2.41           1334         -      Not Applicable
  04/04/2026 12 PM PDT            2.42           1341         +      Not Applicable
  04/04/2026 01 PM PDT            2.41           1334         -      Not Applicable
  04/04/2026 02 PM PDT            2.42           1341         +      Not Applicable
  04/04/2026 03 PM PDT            2.41           1334         -      Not Applicable
  04/04/2026 04 PM PDT            2.41           1334         0      Not Applicable
  04/04/2026 05 PM PDT            2.40           1327         -      Not Applicable
  04/04/2026 06 PM PDT            2.40           1327         0      Not Applicable
  04/04/2026 07 PM PDT            2.41           1334         +      Not Applicable
  04/04/2026 08 PM PDT            2.40           1327         -      Not Applicable
  04/04/2026 09 PM PDT            2.40           1327         0      Not Applicable
  04/04/2026 10 PM PDT            2.40           1327         0      Not Applicable
  04/04/2026 11 PM PDT            2.41           1334         +      Not Applicable
  04/05/2026 12 AM PDT            2.40           1327         -      Not Applicable
  04/05/2026 01 AM PDT            2.40           1327         0      Not Applicable
  04/05/2026 02 AM PDT            2.41           1334         +      Not Applicable
  04/05/2026 03 AM PDT            2.40           1327         -      Not Applicable
  04/05/2026 04 AM PDT            2.40           1327         0      Not Applicable
  04/05/2026 05 AM PDT            2.40           1327         0      Not Applicable
  04/05/2026 06 AM PDT            2.40           1327         0      Not Applicable
  04/05/2026 07 AM PDT            2.39           1320         -      Not Applicable
  04/05/2026 08 AM PDT            2.40           1327         +      Not Applicable
  04/05/2026 09 AM PDT            2.40           1327         0      Not Applicable
  04/05/2026 10 AM PDT            2.40           1327         0      Not Applicable
  04/05/2026 11 AM PDT            2.41           1334         +      Not Applicable
  04/05/2026 12 PM PDT            2.40           1327         -      Not Applicable
  04/05/2026 01 PM PDT            2.41           1334         +      Not Applicable
  04/05/2026 02 PM PDT            2.41           1334         0      Not Applicable
  04/05/2026 03 PM PDT            2.41           1334         0      Not Applicable
  04/05/2026 04 PM PDT            2.40           1327         -      Not Applicable
  04/05/2026 05 PM PDT            2.40           1327         0      Not Applicable
  04/05/2026 06 PM PDT            2.41           1334         +      Not Applicable
  04/05/2026 07 PM PDT            2.40           1327         -      Not Applicable
  04/05/2026 08 PM PDT            2.40           1327         0      Not Applicable
  04/05/2026 09 PM PDT            2.39           1320         -      Not Applicable
  04/05/2026 10 PM PDT            2.39           1320         0      Not Applicable
  04/05/2026 11 PM PDT            2.41           1334         +      Not Applicable
  04/06/2026 12 AM PDT            2.41           1334         0      Not Applicable
  04/06/2026 01 AM PDT            2.40           1327         -      Not Applicable
  04/06/2026 02 AM PDT            2.39           1320         -      Not Applicable
  04/06/2026 03 AM PDT            2.40           1327         +      Not Applicable
  04/06/2026 04 AM PDT            2.40           1327         0      Not Applicable
  04/06/2026 05 AM PDT            2.40           1327         0      Not Applicable
  04/06/2026 06 AM PDT            2.39           1320         -      Not Applicable
  04/06/2026 07 AM PDT            2.39           1320         0      Not Applicable
  04/06/2026 08 AM PDT            2.38           1313         -      Not Applicable
  04/06/2026 09 AM PDT            2.39           1320         +      Not Applicable
  04/06/2026 10 AM PDT            2.39           1320         0      Not Applicable
  04/06/2026 11 AM PDT            2.38           1313         -      Not Applicable
  04/06/2026 12 PM PDT            2.39           1320         +      Not Applicable
  04/06/2026 01 PM PDT            2.39           1320         0      Not Applicable
  04/06/2026 02 PM PDT            2.39           1320         0      Not Applicable
  04/06/2026 03 PM PDT            2.41           1334         +      Not Applicable
  04/06/2026 04 PM PDT            2.40           1327         -      Not Applicable
  04/06/2026 05 PM PDT            2.41           1334         +      Not Applicable
  04/06/2026 06 PM PDT            2.40           1327         -      Not Applicable
  04/06/2026 07 PM PDT            2.39           1320         -      Not Applicable
  04/06/2026 08 PM PDT            2.40           1327         +      Not Applicable
  04/06/2026 09 PM PDT            2.41           1334         +      Not Applicable
  04/06/2026 10 PM PDT            2.42           1341         +      Not Applicable
  04/06/2026 11 PM PDT            2.42           1341         0      Not Applicable
  04/07/2026 12 AM PDT            2.42           1341         0      Not Applicable
  04/07/2026 01 AM PDT            2.42           1341         0      Not Applicable
  04/07/2026 02 AM PDT            2.43           1348         +      Not Applicable
  04/07/2026 03 AM PDT            2.43           1348         0      Not Applicable
  04/07/2026 04 AM PDT            2.44           1354         +      Not Applicable
  04/07/2026 05 AM PDT            2.43           1348         -      Not Applicable
  04/07/2026 06 AM PDT            2.43           1348         0      Not Applicable
  04/07/2026 07 AM PDT            2.43           1348         0      Not Applicable
  04/07/2026 08 AM PDT            2.43           1348         0      Not Applicable
  04/07/2026 09 AM PDT            2.44           1354         +      Not Applicable
  04/07/2026 10 AM PDT            2.44           1354         0      Not Applicable
  04/07/2026 11 AM PDT            2.43           1348         -      Not Applicable
  04/07/2026 12 PM PDT            2.45           1361         +      Not Applicable
  04/07/2026 01 PM PDT            2.43           1348         -      Not Applicable
  04/07/2026 02 PM PDT            2.43           1348         0      Not Applicable
  04/07/2026 03 PM PDT            2.45           1361         +      Not Applicable
  04/07/2026 04 PM PDT            2.44           1354         -      Not Applicable
  04/07/2026 05 PM PDT            2.44           1354         0      Not Applicable
  04/07/2026 06 PM PDT            2.43           1348         -      Not Applicable
  04/07/2026 07 PM PDT            2.44           1354         +      Not Applicable
  04/07/2026 08 PM PDT            2.43           1348         -      Not Applicable
  04/07/2026 09 PM PDT            2.43           1348         0      Not Applicable
  04/07/2026 10 PM PDT            2.47           1375         +      Not Applicable
  04/07/2026 11 PM PDT            2.48           1382         +      Not Applicable
  04/08/2026 12 AM PDT            2.48           1382         0      Not Applicable
  04/08/2026 01 AM PDT            2.47           1375         -      Not Applicable
  04/08/2026 02 AM PDT            2.47           1375         0      Not Applicable
  04/08/2026 03 AM PDT            2.47           1375         0      Not Applicable
  04/08/2026 04 AM PDT            2.47           1375         0      Not Applicable
  04/08/2026 05 AM PDT            2.48           1382         +      Not Applicable
  04/08/2026 06 AM PDT            2.46           1368         -      Not Applicable
  04/08/2026 07 AM PDT            2.46           1368         0      Not Applicable
  04/08/2026 08 AM PDT            2.47           1375         +      Not Applicable
  04/08/2026 09 AM PDT            2.47           1375         0      Not Applicable
  04/08/2026 10 AM PDT            2.45           1361         -      Not Applicable
  04/08/2026 11 AM PDT            2.47           1375         +      Not Applicable
  04/08/2026 12 PM PDT            2.47           1375         0      Not Applicable
  04/08/2026 01 PM PDT            2.47           1375         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/08/2026 02 PM PDT            2.47           1375                Not Applicable
  04/08/2026 03 PM PDT            2.47           1375         0      Not Applicable
  04/08/2026 04 PM PDT            2.48           1382         +      Not Applicable
  04/08/2026 05 PM PDT            2.48           1382         0      Not Applicable
  04/08/2026 06 PM PDT            2.49           1389         +      Not Applicable
  04/08/2026 07 PM PDT            2.50           1396         +      Not Applicable
  04/08/2026 08 PM PDT            2.51           1403         +      Not Applicable
  04/08/2026 09 PM PDT            2.52           1410         +      Not Applicable
  04/08/2026 10 PM PDT            2.54           1424         +      Not Applicable
  04/08/2026 11 PM PDT            2.56           1438         +      Not Applicable
  04/09/2026 12 AM PDT            2.59           1460         +      Not Applicable
  04/09/2026 01 AM PDT            2.62           1481         +      Not Applicable
  04/09/2026 02 AM PDT            2.65           1503         +      Not Applicable
  04/09/2026 03 AM PDT            2.68           1525         +      Not Applicable
  04/09/2026 04 AM PDT            2.70           1540         +      Not Applicable
  04/09/2026 05 AM PDT            2.73           1562         +      Not Applicable
  04/09/2026 06 AM PDT            2.74           1569         +      Not Applicable
  04/09/2026 07 AM PDT            2.76           1584         +      Not Applicable
  04/09/2026 08 AM PDT            2.78           1599         +      Not Applicable
  04/09/2026 09 AM PDT            2.79           1606         +      Not Applicable
  04/09/2026 10 AM PDT            2.81           1621         +      Not Applicable
  04/09/2026 11 AM PDT            2.82           1629         +      Not Applicable
  04/09/2026 12 PM PDT            2.83           1637         +      Not Applicable
  04/09/2026 01 PM PDT            2.84           1644         +      Not Applicable
  04/09/2026 02 PM PDT            2.85           1652         +      Not Applicable
  04/09/2026 03 PM PDT            2.85           1652         0      Not Applicable
  04/09/2026 04 PM PDT            2.86           1659         +      Not Applicable
  04/09/2026 05 PM PDT            2.87           1667         +      Not Applicable
  04/09/2026 06 PM PDT            2.88           1675         +      Not Applicable
  04/09/2026 07 PM PDT            2.89           1682         +      Not Applicable
  04/09/2026 08 PM PDT            2.90           1690         +      Not Applicable
  04/09/2026 09 PM PDT            2.91           1698         +      Not Applicable
  04/09/2026 10 PM PDT            2.91           1698         0      Not Applicable
  04/09/2026 11 PM PDT            2.92           1706         +      Not Applicable
  04/10/2026 12 AM PDT            2.92           1706         0      Not Applicable
  04/10/2026 01 AM PDT            2.92           1706         0      Not Applicable
  04/10/2026 02 AM PDT            2.92           1706         0      Not Applicable
  04/10/2026 03 AM PDT            2.92           1706         0      Not Applicable
  04/10/2026 04 AM PDT            2.92           1706         0      Not Applicable
  04/10/2026 05 AM PDT            2.92           1706         0      Not Applicable
  04/10/2026 06 AM PDT            2.92           1706         0      Not Applicable
  04/10/2026 07 AM PDT            2.92           1706         0      Not Applicable
  04/10/2026 08 AM PDT            2.91           1698         -      Not Applicable
  04/10/2026 09 AM PDT            2.91           1698         0      Not Applicable
  04/10/2026 10 AM PDT            2.91           1698         0      Not Applicable
  04/10/2026 11 AM PDT            2.91           1698         0      Not Applicable
  04/10/2026 12 PM PDT            2.91           1698         0      Not Applicable
  04/10/2026 01 PM PDT            2.91           1698         0      Not Applicable
  04/10/2026 02 PM PDT            2.91           1698         0      Not Applicable
  04/10/2026 03 PM PDT            2.91           1698         0      Not Applicable
  04/10/2026 04 PM PDT            2.92           1706         +      Not Applicable
  04/10/2026 05 PM PDT            2.92           1706         0      Not Applicable
  04/10/2026 06 PM PDT            2.92           1706         0      Not Applicable
  04/10/2026 07 PM PDT            2.93           1713         +      Not Applicable
  04/10/2026 08 PM PDT            2.93           1713         0      Not Applicable
  04/10/2026 09 PM PDT            2.94           1721         +      Not Applicable
  04/10/2026 10 PM PDT            2.94           1721         0      Not Applicable
  04/10/2026 11 PM PDT            2.94           1721         0      Not Applicable
  04/11/2026 12 AM PDT            2.94           1721         0      Not Applicable
  04/11/2026 01 AM PDT            2.95           1729         +      Not Applicable
  04/11/2026 02 AM PDT            2.95           1729         0      Not Applicable
  04/11/2026 03 AM PDT            2.95           1729         0      Not Applicable
  04/11/2026 04 AM PDT            2.96           1737         +      Not Applicable
  04/11/2026 05 AM PDT            2.96           1737         0      Not Applicable
  04/11/2026 06 AM PDT            2.96           1737         0      Not Applicable
  04/11/2026 07 AM PDT            2.96           1737         0      Not Applicable
  04/11/2026 08 AM PDT            2.97           1744         +      Not Applicable
  04/11/2026 09 AM PDT            2.97           1744         0      Not Applicable
  04/11/2026 10 AM PDT            2.97           1744         0      Not Applicable
  04/11/2026 11 AM PDT            2.98           1752         +      Not Applicable
  04/11/2026 12 PM PDT            2.98           1752         0      Not Applicable
  04/11/2026 01 PM PDT            2.99           1760         +      Not Applicable
  04/11/2026 02 PM PDT            3.00           1768         +      Not Applicable
  04/11/2026 03 PM PDT            3.00           1768         0      Not Applicable
  04/11/2026 04 PM PDT            3.01           1776         +      Not Applicable
  04/11/2026 05 PM PDT            3.03           1792         +      Not Applicable
  04/11/2026 06 PM PDT            3.04           1800         +      Not Applicable
  04/11/2026 07 PM PDT            3.06           1816         +      Not Applicable
  04/11/2026 08 PM PDT            3.07           1824         +      Not Applicable
  04/11/2026 09 PM PDT            3.09           1840         +      Not Applicable
  04/11/2026 10 PM PDT            3.09           1840         0      Not Applicable
  04/11/2026 11 PM PDT            3.10           1848         +      Not Applicable
  04/12/2026 12 AM PDT            3.10           1848         0      Not Applicable
  04/12/2026 01 AM PDT            3.09           1840         -      Not Applicable
  04/12/2026 02 AM PDT            3.09           1840         0      Not Applicable
  04/12/2026 03 AM PDT            3.09           1840         0      Not Applicable
  04/12/2026 04 AM PDT            3.09           1840         0      Not Applicable
  04/12/2026 05 AM PDT            3.09           1840         0      Not Applicable
  04/12/2026 06 AM PDT            3.09           1840         0      Not Applicable
  04/12/2026 07 AM PDT            3.08           1832         -      Not Applicable
  04/12/2026 08 AM PDT            3.08           1832         0      Not Applicable
  04/12/2026 09 AM PDT            3.08           1832         0      Not Applicable
  04/12/2026 10 AM PDT            3.08           1832         0      Not Applicable
  04/12/2026 11 AM PDT            3.07           1824         -      Not Applicable
  04/12/2026 12 PM PDT            3.07           1824         0      Not Applicable
  04/12/2026 01 PM PDT            3.07           1824         0      Not Applicable
  04/12/2026 02 PM PDT            3.06           1816         -      Not Applicable
  04/12/2026 03 PM PDT            3.06           1816         0      Not Applicable
  04/12/2026 04 PM PDT            3.05           1808         -      Not Applicable
  04/12/2026 05 PM PDT            3.05           1808         0      Not Applicable
  04/12/2026 06 PM PDT            3.05           1808         0      Not Applicable
  04/12/2026 07 PM PDT            3.05           1808         0      Not Applicable
  04/12/2026 08 PM PDT            3.05           1808         0      Not Applicable
  04/12/2026 09 PM PDT            3.05           1808         0      Not Applicable
  04/12/2026 10 PM PDT            3.05           1808         0      Not Applicable
  04/12/2026 11 PM PDT            3.05           1808         0      Not Applicable
  04/13/2026 12 AM PDT            3.05           1808         0      Not Applicable
  04/13/2026 01 AM PDT            3.05           1808         0      Not Applicable
  04/13/2026 02 AM PDT            3.05           1808         0      Not Applicable
  04/13/2026 03 AM PDT            3.05           1808         0      Not Applicable
  04/13/2026 04 AM PDT            3.05           1808         0      Not Applicable
  04/13/2026 05 AM PDT            3.04           1800         -      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.