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

 | 

KLAMATH RIVER - IRON GATE (IRGC1)
Latitude: 41.93º NLongitude: 122.44º WElevation: 2162 Feet
Location: Siskiyou County in CaliforniaBulletin Group: North CoastRiver Group: Klamath
Issuance Time: May 08 2025 at 9:31 AM PDTNext Issuance: May 09 2025 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:  05/08/2025 at 09:35 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/04/2025 at 08:00 AM PDT
# Maximum Observed Stage:                       5.46 Feet
# Maximum Observed Flow:                        3839 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/13/2025 at 12:00 AM PDT
# Maximum Forecast Stage:                       4.17 Feet
# Maximum Forecast Flow:                        2556 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/03/2025 09 AM PDT            5.43           3806                Not Applicable
  05/03/2025 10 AM PDT            5.44           3817         +      Not Applicable
  05/03/2025 11 AM PDT            5.41           3784         -      Not Applicable
  05/03/2025 12 PM PDT            5.45           3828         +      Not Applicable
  05/03/2025 01 PM PDT            5.42           3795         -      Not Applicable
  05/03/2025 02 PM PDT            5.43           3806         +      Not Applicable
  05/03/2025 03 PM PDT            5.42           3795         -      Not Applicable
  05/03/2025 04 PM PDT            5.42           3795         0      Not Applicable
  05/03/2025 05 PM PDT            5.41           3784         -      Not Applicable
  05/03/2025 06 PM PDT            5.41           3784         0      Not Applicable
  05/03/2025 07 PM PDT            5.42           3795         +      Not Applicable
  05/03/2025 08 PM PDT            5.42           3795         0      Not Applicable
  05/03/2025 09 PM PDT            5.42           3795         0      Not Applicable
  05/03/2025 10 PM PDT            5.44           3817         +      Not Applicable
  05/03/2025 11 PM PDT            5.44           3817         0      Not Applicable
  05/04/2025 12 AM PDT            5.42           3795         -      Not Applicable
  05/04/2025 01 AM PDT            5.42           3795         0      Not Applicable
  05/04/2025 02 AM PDT            5.43           3806         +      Not Applicable
  05/04/2025 03 AM PDT            5.46           3839         +      Not Applicable
  05/04/2025 04 AM PDT            5.42           3795         -      Not Applicable
  05/04/2025 05 AM PDT            5.44           3817         +      Not Applicable
  05/04/2025 06 AM PDT            5.42           3795         -      Not Applicable
  05/04/2025 07 AM PDT            5.44           3817         +      Not Applicable
  05/04/2025 08 AM PDT            5.46           3839         +      Not Applicable
  05/04/2025 09 AM PDT            5.44           3817         -      Not Applicable
  05/04/2025 10 AM PDT            5.39           3763         -      Not Applicable
  05/04/2025 11 AM PDT            5.42           3795         +      Not Applicable
  05/04/2025 12 PM PDT            5.42           3795         0      Not Applicable
  05/04/2025 01 PM PDT            5.43           3806         +      Not Applicable
  05/04/2025 02 PM PDT            5.42           3795         -      Not Applicable
  05/04/2025 03 PM PDT            5.39           3763         -      Not Applicable
  05/04/2025 04 PM PDT            5.40           3774         +      Not Applicable
  05/04/2025 05 PM PDT            5.27           3634         -      Not Applicable
  05/04/2025 06 PM PDT            5.23           3591         -      Not Applicable
  05/04/2025 07 PM PDT            5.21           3570         -      Not Applicable
  05/04/2025 08 PM PDT            5.25           3612         +      Not Applicable
  05/04/2025 09 PM PDT            5.28           3644         +      Not Applicable
  05/04/2025 10 PM PDT            5.28           3644         0      Not Applicable
  05/04/2025 11 PM PDT            5.24           3602         -      Not Applicable
  05/05/2025 12 AM PDT            5.27           3634         +      Not Applicable
  05/05/2025 01 AM PDT            5.28           3644         +      Not Applicable
  05/05/2025 02 AM PDT            5.29           3655         +      Not Applicable
  05/05/2025 03 AM PDT            5.25           3612         -      Not Applicable
  05/05/2025 04 AM PDT            5.27           3634         +      Not Applicable
  05/05/2025 05 AM PDT            5.28           3644         +      Not Applicable
  05/05/2025 06 AM PDT            5.25           3612         -      Not Applicable
  05/05/2025 07 AM PDT            5.27           3634         +      Not Applicable
  05/05/2025 08 AM PDT            5.26           3623         -      Not Applicable
  05/05/2025 09 AM PDT            5.26           3623         0      Not Applicable
  05/05/2025 10 AM PDT            5.24           3602         -      Not Applicable
  05/05/2025 11 AM PDT            5.23           3591         -      Not Applicable
  05/05/2025 12 PM PDT            5.22           3580         -      Not Applicable
  05/05/2025 01 PM PDT            5.25           3612         +      Not Applicable
  05/05/2025 02 PM PDT            5.25           3612         0      Not Applicable
  05/05/2025 03 PM PDT            5.26           3623         +      Not Applicable
  05/05/2025 04 PM PDT            5.23           3591         -      Not Applicable
  05/05/2025 05 PM PDT            5.11           3465         -      Not Applicable
  05/05/2025 06 PM PDT            5.04           3392         -      Not Applicable
  05/05/2025 07 PM PDT            5.02           3372         -      Not Applicable
  05/05/2025 08 PM PDT            5.02           3372         0      Not Applicable
  05/05/2025 09 PM PDT            5.01           3362         -      Not Applicable
  05/05/2025 10 PM PDT            5.01           3362         0      Not Applicable
  05/05/2025 11 PM PDT            4.99           3341         -      Not Applicable
  05/06/2025 12 AM PDT            4.85           3200         -      Not Applicable
  05/06/2025 01 AM PDT            4.84           3190         -      Not Applicable
  05/06/2025 02 AM PDT            4.84           3190         0      Not Applicable
  05/06/2025 03 AM PDT            4.83           3180         -      Not Applicable
  05/06/2025 04 AM PDT            4.83           3180         0      Not Applicable
  05/06/2025 05 AM PDT            4.75           3100         -      Not Applicable
  05/06/2025 06 AM PDT            4.61           2964         -      Not Applicable
  05/06/2025 07 AM PDT            4.59           2945         -      Not Applicable
  05/06/2025 08 AM PDT            4.59           2945         0      Not Applicable
  05/06/2025 09 AM PDT            4.58           2935         -      Not Applicable
  05/06/2025 10 AM PDT            4.57           2926         -      Not Applicable
  05/06/2025 11 AM PDT            4.57           2926         0      Not Applicable
  05/06/2025 12 PM PDT            4.57           2926         0      Not Applicable
  05/06/2025 01 PM PDT            4.56           2916         -      Not Applicable
  05/06/2025 02 PM PDT            4.59           2945         +      Not Applicable
  05/06/2025 03 PM PDT            4.57           2926         -      Not Applicable
  05/06/2025 04 PM PDT            4.56           2916         -      Not Applicable
  05/06/2025 05 PM PDT            4.57           2926         +      Not Applicable
  05/06/2025 06 PM PDT            4.53           2888         -      Not Applicable
  05/06/2025 07 PM PDT            4.51           2869         -      Not Applicable
  05/06/2025 08 PM PDT            4.51           2869         0      Not Applicable
  05/06/2025 09 PM PDT            4.51           2869         0      Not Applicable
  05/06/2025 10 PM PDT            4.51           2869         0      Not Applicable
  05/06/2025 11 PM PDT            4.48           2840         -      Not Applicable
  05/07/2025 12 AM PDT            4.43           2793         -      Not Applicable
  05/07/2025 01 AM PDT            4.42           2784         -      Not Applicable
  05/07/2025 02 AM PDT            4.41           2775         -      Not Applicable
  05/07/2025 03 AM PDT            4.42           2784         +      Not Applicable
  05/07/2025 04 AM PDT            4.42           2784         0      Not Applicable
  05/07/2025 05 AM PDT            4.40           2765         -      Not Applicable
  05/07/2025 06 AM PDT            4.37           2738         -      Not Applicable
  05/07/2025 07 AM PDT            4.32           2692         -      Not Applicable
  05/07/2025 08 AM PDT            4.35           2719         +      Not Applicable
  05/07/2025 09 AM PDT            4.32           2692         -      Not Applicable
  05/07/2025 10 AM PDT            4.32           2692         0      Not Applicable
  05/07/2025 11 AM PDT            4.32           2692         0      Not Applicable
  05/07/2025 12 PM PDT            4.33           2701         +      Not Applicable
  05/07/2025 01 PM PDT            4.32           2692         -      Not Applicable
  05/07/2025 02 PM PDT            4.32           2692         0      Not Applicable
  05/07/2025 03 PM PDT            4.34           2710         +      Not Applicable
  05/07/2025 04 PM PDT            4.33           2701         -      Not Applicable
  05/07/2025 05 PM PDT            4.32           2692         -      Not Applicable
  05/07/2025 06 PM PDT            4.26           2637         -      Not Applicable
  05/07/2025 07 PM PDT            4.20           2583         -      Not Applicable
  05/07/2025 08 PM PDT            4.18           2565         -      Not Applicable
  05/07/2025 09 PM PDT            4.17           2556         -      Not Applicable
  05/07/2025 10 PM PDT            4.19           2574         +      Not Applicable
  05/07/2025 11 PM PDT            4.15           2538         -      Not Applicable
  05/08/2025 12 AM PDT            4.12           2511         -      Not Applicable
  05/08/2025 01 AM PDT            4.10           2494         -      Not Applicable
  05/08/2025 02 AM PDT            4.10           2494         0      Not Applicable
  05/08/2025 03 AM PDT            4.12           2511         +      Not Applicable
  05/08/2025 04 AM PDT            4.12           2511         0      Not Applicable
  05/08/2025 05 AM PDT            4.10           2494         -      Not Applicable
  05/08/2025 06 AM PDT            4.12           2511         +      Not Applicable
  05/08/2025 07 AM PDT            4.12           2511         0      Not Applicable
  05/08/2025 08 AM PDT            4.11           2503         -      Not Applicable
  05/08/2025 09 AM PDT            4.11           2503         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/08/2025 10 AM PDT            4.11           2503                Not Applicable
  05/08/2025 11 AM PDT            4.11           2503         0      Not Applicable
  05/08/2025 12 PM PDT            4.10           2494         -      Not Applicable
  05/08/2025 01 PM PDT            4.10           2494         0      Not Applicable
  05/08/2025 02 PM PDT            4.10           2494         0      Not Applicable
  05/08/2025 03 PM PDT            4.09           2485         -      Not Applicable
  05/08/2025 04 PM PDT            4.09           2485         0      Not Applicable
  05/08/2025 05 PM PDT            4.09           2485         0      Not Applicable
  05/08/2025 06 PM PDT            4.09           2485         0      Not Applicable
  05/08/2025 07 PM PDT            4.09           2485         0      Not Applicable
  05/08/2025 08 PM PDT            4.09           2485         0      Not Applicable
  05/08/2025 09 PM PDT            4.09           2485         0      Not Applicable
  05/08/2025 10 PM PDT            4.09           2485         0      Not Applicable
  05/08/2025 11 PM PDT            4.09           2485         0      Not Applicable
  05/09/2025 12 AM PDT            4.09           2485         0      Not Applicable
  05/09/2025 01 AM PDT            4.09           2485         0      Not Applicable
  05/09/2025 02 AM PDT            4.09           2485         0      Not Applicable
  05/09/2025 03 AM PDT            4.09           2485         0      Not Applicable
  05/09/2025 04 AM PDT            4.09           2485         0      Not Applicable
  05/09/2025 05 AM PDT            4.09           2485         0      Not Applicable
  05/09/2025 06 AM PDT            4.09           2485         0      Not Applicable
  05/09/2025 07 AM PDT            4.09           2485         0      Not Applicable
  05/09/2025 08 AM PDT            4.08           2476         -      Not Applicable
  05/09/2025 09 AM PDT            4.08           2476         0      Not Applicable
  05/09/2025 10 AM PDT            4.08           2476         0      Not Applicable
  05/09/2025 11 AM PDT            4.08           2476         0      Not Applicable
  05/09/2025 12 PM PDT            4.08           2476         0      Not Applicable
  05/09/2025 01 PM PDT            4.08           2476         0      Not Applicable
  05/09/2025 02 PM PDT            4.09           2485         +      Not Applicable
  05/09/2025 03 PM PDT            4.09           2485         0      Not Applicable
  05/09/2025 04 PM PDT            4.09           2485         0      Not Applicable
  05/09/2025 05 PM PDT            4.09           2485         0      Not Applicable
  05/09/2025 06 PM PDT            4.09           2485         0      Not Applicable
  05/09/2025 07 PM PDT            4.09           2485         0      Not Applicable
  05/09/2025 08 PM PDT            4.09           2485         0      Not Applicable
  05/09/2025 09 PM PDT            4.09           2485         0      Not Applicable
  05/09/2025 10 PM PDT            4.10           2494         +      Not Applicable
  05/09/2025 11 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 12 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 01 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 02 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 03 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 04 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 05 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 06 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 07 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 08 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 09 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 10 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 11 AM PDT            4.10           2494         0      Not Applicable
  05/10/2025 12 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 01 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 02 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 03 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 04 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 05 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 06 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 07 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 08 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 09 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 10 PM PDT            4.10           2494         0      Not Applicable
  05/10/2025 11 PM PDT            4.10           2494         0      Not Applicable
  05/11/2025 12 AM PDT            4.10           2494         0      Not Applicable
  05/11/2025 01 AM PDT            4.10           2494         0      Not Applicable
  05/11/2025 02 AM PDT            4.10           2494         0      Not Applicable
  05/11/2025 03 AM PDT            4.10           2494         0      Not Applicable
  05/11/2025 04 AM PDT            4.10           2494         0      Not Applicable
  05/11/2025 05 AM PDT            4.09           2485         -      Not Applicable
  05/11/2025 06 AM PDT            4.09           2485         0      Not Applicable
  05/11/2025 07 AM PDT            4.09           2485         0      Not Applicable
  05/11/2025 08 AM PDT            4.09           2485         0      Not Applicable
  05/11/2025 09 AM PDT            4.09           2485         0      Not Applicable
  05/11/2025 10 AM PDT            4.09           2485         0      Not Applicable
  05/11/2025 11 AM PDT            4.08           2476         -      Not Applicable
  05/11/2025 12 PM PDT            4.08           2476         0      Not Applicable
  05/11/2025 01 PM PDT            4.08           2476         0      Not Applicable
  05/11/2025 02 PM PDT            4.08           2476         0      Not Applicable
  05/11/2025 03 PM PDT            4.08           2476         0      Not Applicable
  05/11/2025 04 PM PDT            4.07           2467         -      Not Applicable
  05/11/2025 05 PM PDT            4.07           2467         0      Not Applicable
  05/11/2025 06 PM PDT            4.07           2467         0      Not Applicable
  05/11/2025 07 PM PDT            4.07           2467         0      Not Applicable
  05/11/2025 08 PM PDT            4.07           2467         0      Not Applicable
  05/11/2025 09 PM PDT            4.06           2459         -      Not Applicable
  05/11/2025 10 PM PDT            4.06           2459         0      Not Applicable
  05/11/2025 11 PM PDT            4.06           2459         0      Not Applicable
  05/12/2025 12 AM PDT            4.05           2450         -      Not Applicable
  05/12/2025 01 AM PDT            4.05           2450         0      Not Applicable
  05/12/2025 02 AM PDT            4.05           2450         0      Not Applicable
  05/12/2025 03 AM PDT            4.05           2450         0      Not Applicable
  05/12/2025 04 AM PDT            4.05           2450         0      Not Applicable
  05/12/2025 05 AM PDT            4.05           2450         0      Not Applicable
  05/12/2025 06 AM PDT            4.05           2450         0      Not Applicable
  05/12/2025 07 AM PDT            4.05           2450         0      Not Applicable
  05/12/2025 08 AM PDT            4.06           2459         +      Not Applicable
  05/12/2025 09 AM PDT            4.06           2459         0      Not Applicable
  05/12/2025 10 AM PDT            4.07           2467         +      Not Applicable
  05/12/2025 11 AM PDT            4.07           2467         0      Not Applicable
  05/12/2025 12 PM PDT            4.08           2476         +      Not Applicable
  05/12/2025 01 PM PDT            4.08           2476         0      Not Applicable
  05/12/2025 02 PM PDT            4.09           2485         +      Not Applicable
  05/12/2025 03 PM PDT            4.10           2494         +      Not Applicable
  05/12/2025 04 PM PDT            4.11           2503         +      Not Applicable
  05/12/2025 05 PM PDT            4.11           2503         0      Not Applicable
  05/12/2025 06 PM PDT            4.12           2511         +      Not Applicable
  05/12/2025 07 PM PDT            4.13           2520         +      Not Applicable
  05/12/2025 08 PM PDT            4.14           2529         +      Not Applicable
  05/12/2025 09 PM PDT            4.15           2538         +      Not Applicable
  05/12/2025 10 PM PDT            4.16           2547         +      Not Applicable
  05/12/2025 11 PM PDT            4.16           2547         0      Not Applicable
  05/13/2025 12 AM PDT            4.17           2556         +      Not Applicable
  05/13/2025 01 AM PDT            4.17           2556         0      Not Applicable
  05/13/2025 02 AM PDT            4.17           2556         0      Not Applicable
  05/13/2025 03 AM PDT            4.17           2556         0      Not Applicable
  05/13/2025 04 AM PDT            4.16           2547         -      Not Applicable
  05/13/2025 05 AM PDT            4.16           2547         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.