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 10 2026 at 8:04 AM PDTNext Issuance: Apr 10 2026 at 3:00 PM 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:  04/10/2026 at 08:07 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  04/09/2026 at 06:00 PM PDT
# Maximum Observed Stage:                       2.58 Feet
# Maximum Observed Flow:                        1453 cfs
#
# Earliest Date & Time of Maximum Forecast:     04/12/2026 at 08:00 PM PDT
# Maximum Forecast Stage:                       2.59 Feet
# Maximum Forecast Flow:                        1460 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  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            2.48           1382         +      Not Applicable
  04/08/2026 02 PM PDT            2.48           1382         0      Not Applicable
  04/08/2026 03 PM PDT            2.48           1382         0      Not Applicable
  04/08/2026 04 PM PDT            2.48           1382         0      Not Applicable
  04/08/2026 05 PM PDT            2.48           1382         0      Not Applicable
  04/08/2026 06 PM PDT            2.48           1382         0      Not Applicable
  04/08/2026 07 PM PDT            2.49           1389         +      Not Applicable
  04/08/2026 08 PM PDT            2.50           1396         +      Not Applicable
  04/08/2026 09 PM PDT            2.48           1382         -      Not Applicable
  04/08/2026 10 PM PDT            2.48           1382         0      Not Applicable
  04/08/2026 11 PM PDT            2.49           1389         +      Not Applicable
  04/09/2026 12 AM PDT            2.49           1389         0      Not Applicable
  04/09/2026 01 AM PDT            2.51           1403         +      Not Applicable
  04/09/2026 02 AM PDT            2.50           1396         -      Not Applicable
  04/09/2026 03 AM PDT            2.48           1382         -      Not Applicable
  04/09/2026 04 AM PDT            2.50           1396         +      Not Applicable
  04/09/2026 05 AM PDT            2.51           1403         +      Not Applicable
  04/09/2026 06 AM PDT            2.49           1389         -      Not Applicable
  04/09/2026 07 AM PDT            2.47           1375         -      Not Applicable
  04/09/2026 08 AM PDT            2.47           1375         0      Not Applicable
  04/09/2026 09 AM PDT            2.48           1382         +      Not Applicable
  04/09/2026 10 AM PDT            2.48           1382         0      Not Applicable
  04/09/2026 11 AM PDT            2.49           1389         +      Not Applicable
  04/09/2026 12 PM PDT            2.48           1382         -      Not Applicable
  04/09/2026 01 PM PDT            2.50           1396         +      Not Applicable
  04/09/2026 02 PM PDT            2.51           1403         +      Not Applicable
  04/09/2026 03 PM PDT            2.51           1403         0      Not Applicable
  04/09/2026 04 PM PDT            2.51           1403         0      Not Applicable
  04/09/2026 05 PM PDT            2.50           1396         -      Not Applicable
  04/09/2026 06 PM PDT            2.58           1453         +      Not Applicable
  04/09/2026 07 PM PDT            2.56           1438         -      Not Applicable
  04/09/2026 08 PM PDT            2.54           1424         -      Not Applicable
  04/09/2026 09 PM PDT            2.53           1417         -      Not Applicable
  04/09/2026 10 PM PDT            2.56           1438         +      Not Applicable
  04/09/2026 11 PM PDT            2.55           1431         -      Not Applicable
  04/10/2026 12 AM PDT            2.54           1424         -      Not Applicable
  04/10/2026 01 AM PDT            2.54           1424         0      Not Applicable
  04/10/2026 02 AM PDT            2.54           1424         0      Not Applicable
  04/10/2026 03 AM PDT            2.53           1417         -      Not Applicable
  04/10/2026 04 AM PDT            2.51           1403         -      Not Applicable
  04/10/2026 05 AM PDT            2.52           1410         +      Not Applicable
  04/10/2026 06 AM PDT            2.52           1410         0      Not Applicable
  04/10/2026 07 AM PDT            2.51           1403         -      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  04/10/2026 08 AM PDT            2.50           1396                Not Applicable
  04/10/2026 09 AM PDT            2.48           1382         -      Not Applicable
  04/10/2026 10 AM PDT            2.48           1382         0      Not Applicable
  04/10/2026 11 AM PDT            2.47           1375         -      Not Applicable
  04/10/2026 12 PM PDT            2.46           1368         -      Not Applicable
  04/10/2026 01 PM PDT            2.46           1368         0      Not Applicable
  04/10/2026 02 PM PDT            2.45           1361         -      Not Applicable
  04/10/2026 03 PM PDT            2.45           1361         0      Not Applicable
  04/10/2026 04 PM PDT            2.45           1361         0      Not Applicable
  04/10/2026 05 PM PDT            2.45           1361         0      Not Applicable
  04/10/2026 06 PM PDT            2.46           1368         +      Not Applicable
  04/10/2026 07 PM PDT            2.46           1368         0      Not Applicable
  04/10/2026 08 PM PDT            2.46           1368         0      Not Applicable
  04/10/2026 09 PM PDT            2.47           1375         +      Not Applicable
  04/10/2026 10 PM PDT            2.47           1375         0      Not Applicable
  04/10/2026 11 PM PDT            2.48           1382         +      Not Applicable
  04/11/2026 12 AM PDT            2.48           1382         0      Not Applicable
  04/11/2026 01 AM PDT            2.48           1382         0      Not Applicable
  04/11/2026 02 AM PDT            2.48           1382         0      Not Applicable
  04/11/2026 03 AM PDT            2.48           1382         0      Not Applicable
  04/11/2026 04 AM PDT            2.48           1382         0      Not Applicable
  04/11/2026 05 AM PDT            2.48           1382         0      Not Applicable
  04/11/2026 06 AM PDT            2.48           1382         0      Not Applicable
  04/11/2026 07 AM PDT            2.49           1389         +      Not Applicable
  04/11/2026 08 AM PDT            2.49           1389         0      Not Applicable
  04/11/2026 09 AM PDT            2.49           1389         0      Not Applicable
  04/11/2026 10 AM PDT            2.49           1389         0      Not Applicable
  04/11/2026 11 AM PDT            2.49           1389         0      Not Applicable
  04/11/2026 12 PM PDT            2.49           1389         0      Not Applicable
  04/11/2026 01 PM PDT            2.50           1396         +      Not Applicable
  04/11/2026 02 PM PDT            2.50           1396         0      Not Applicable
  04/11/2026 03 PM PDT            2.50           1396         0      Not Applicable
  04/11/2026 04 PM PDT            2.51           1403         +      Not Applicable
  04/11/2026 05 PM PDT            2.52           1410         +      Not Applicable
  04/11/2026 06 PM PDT            2.52           1410         0      Not Applicable
  04/11/2026 07 PM PDT            2.53           1417         +      Not Applicable
  04/11/2026 08 PM PDT            2.54           1424         +      Not Applicable
  04/11/2026 09 PM PDT            2.55           1431         +      Not Applicable
  04/11/2026 10 PM PDT            2.56           1438         +      Not Applicable
  04/11/2026 11 PM PDT            2.56           1438         0      Not Applicable
  04/12/2026 12 AM PDT            2.57           1445         +      Not Applicable
  04/12/2026 01 AM PDT            2.57           1445         0      Not Applicable
  04/12/2026 02 AM PDT            2.58           1453         +      Not Applicable
  04/12/2026 03 AM PDT            2.58           1453         0      Not Applicable
  04/12/2026 04 AM PDT            2.58           1453         0      Not Applicable
  04/12/2026 05 AM PDT            2.58           1453         0      Not Applicable
  04/12/2026 06 AM PDT            2.58           1453         0      Not Applicable
  04/12/2026 07 AM PDT            2.58           1453         0      Not Applicable
  04/12/2026 08 AM PDT            2.58           1453         0      Not Applicable
  04/12/2026 09 AM PDT            2.58           1453         0      Not Applicable
  04/12/2026 10 AM PDT            2.57           1445         -      Not Applicable
  04/12/2026 11 AM PDT            2.58           1453         +      Not Applicable
  04/12/2026 12 PM PDT            2.58           1453         0      Not Applicable
  04/12/2026 01 PM PDT            2.58           1453         0      Not Applicable
  04/12/2026 02 PM PDT            2.58           1453         0      Not Applicable
  04/12/2026 03 PM PDT            2.58           1453         0      Not Applicable
  04/12/2026 04 PM PDT            2.58           1453         0      Not Applicable
  04/12/2026 05 PM PDT            2.58           1453         0      Not Applicable
  04/12/2026 06 PM PDT            2.58           1453         0      Not Applicable
  04/12/2026 07 PM PDT            2.58           1453         0      Not Applicable
  04/12/2026 08 PM PDT            2.59           1460         +      Not Applicable
  04/12/2026 09 PM PDT            2.59           1460         0      Not Applicable
  04/12/2026 10 PM PDT            2.59           1460         0      Not Applicable
  04/12/2026 11 PM PDT            2.59           1460         0      Not Applicable
  04/13/2026 12 AM PDT            2.59           1460         0      Not Applicable
  04/13/2026 01 AM PDT            2.59           1460         0      Not Applicable
  04/13/2026 02 AM PDT            2.59           1460         0      Not Applicable
  04/13/2026 03 AM PDT            2.59           1460         0      Not Applicable
  04/13/2026 04 AM PDT            2.59           1460         0      Not Applicable
  04/13/2026 05 AM PDT            2.59           1460         0      Not Applicable
  04/13/2026 06 AM PDT            2.59           1460         0      Not Applicable
  04/13/2026 07 AM PDT            2.58           1453         -      Not Applicable
  04/13/2026 08 AM PDT            2.58           1453         0      Not Applicable
  04/13/2026 09 AM PDT            2.58           1453         0      Not Applicable
  04/13/2026 10 AM PDT            2.58           1453         0      Not Applicable
  04/13/2026 11 AM PDT            2.58           1453         0      Not Applicable
  04/13/2026 12 PM PDT            2.57           1445         -      Not Applicable
  04/13/2026 01 PM PDT            2.57           1445         0      Not Applicable
  04/13/2026 02 PM PDT            2.57           1445         0      Not Applicable
  04/13/2026 03 PM PDT            2.56           1438         -      Not Applicable
  04/13/2026 04 PM PDT            2.56           1438         0      Not Applicable
  04/13/2026 05 PM PDT            2.56           1438         0      Not Applicable
  04/13/2026 06 PM PDT            2.55           1431         -      Not Applicable
  04/13/2026 07 PM PDT            2.55           1431         0      Not Applicable
  04/13/2026 08 PM PDT            2.55           1431         0      Not Applicable
  04/13/2026 09 PM PDT            2.55           1431         0      Not Applicable
  04/13/2026 10 PM PDT            2.54           1424         -      Not Applicable
  04/13/2026 11 PM PDT            2.54           1424         0      Not Applicable
  04/14/2026 12 AM PDT            2.54           1424         0      Not Applicable
  04/14/2026 01 AM PDT            2.54           1424         0      Not Applicable
  04/14/2026 02 AM PDT            2.53           1417         -      Not Applicable
  04/14/2026 03 AM PDT            2.53           1417         0      Not Applicable
  04/14/2026 04 AM PDT            2.53           1417         0      Not Applicable
  04/14/2026 05 AM PDT            2.53           1417         0      Not Applicable
  04/14/2026 06 AM PDT            2.53           1417         0      Not Applicable
  04/14/2026 07 AM PDT            2.53           1417         0      Not Applicable
  04/14/2026 08 AM PDT            2.53           1417         0      Not Applicable
  04/14/2026 09 AM PDT            2.52           1410         -      Not Applicable
  04/14/2026 10 AM PDT            2.52           1410         0      Not Applicable
  04/14/2026 11 AM PDT            2.52           1410         0      Not Applicable
  04/14/2026 12 PM PDT            2.52           1410         0      Not Applicable
  04/14/2026 01 PM PDT            2.52           1410         0      Not Applicable
  04/14/2026 02 PM PDT            2.52           1410         0      Not Applicable
  04/14/2026 03 PM PDT            2.52           1410         0      Not Applicable
  04/14/2026 04 PM PDT            2.52           1410         0      Not Applicable
  04/14/2026 05 PM PDT            2.52           1410         0      Not Applicable
  04/14/2026 06 PM PDT            2.52           1410         0      Not Applicable
  04/14/2026 07 PM PDT            2.52           1410         0      Not Applicable
  04/14/2026 08 PM PDT            2.52           1410         0      Not Applicable
  04/14/2026 09 PM PDT            2.51           1403         -      Not Applicable
  04/14/2026 10 PM PDT            2.51           1403         0      Not Applicable
  04/14/2026 11 PM PDT            2.51           1403         0      Not Applicable
  04/15/2026 12 AM PDT            2.51           1403         0      Not Applicable
  04/15/2026 01 AM PDT            2.51           1403         0      Not Applicable
  04/15/2026 02 AM PDT            2.51           1403         0      Not Applicable
  04/15/2026 03 AM PDT            2.51           1403         0      Not Applicable
  04/15/2026 04 AM PDT            2.51           1403         0      Not Applicable
  04/15/2026 05 AM PDT            2.51           1403         0      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.