RUSSIAN RIVER - HACIENDA BRIDGE (RIOC1)
Latitude: 38.51º NLongitude: 122.93º WElevation: 20 FeetForecast Type: Unofficial Location
Location: Sonoma County in CaliforniaBulletin Group: Russian NapaRiver Group: Russian Napa
Issuance Time: May 15 2026 at 7:20 AM PDTNext Issuance: May 16 2026 at 9:00 AM PDT
Action/Monitor: 31.0 FeetMinor Flood: 34.0 FeetModerate Flood: N/A Major Flood: N/A

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Russian River - Hacienda Bridge (RIOC1)
#
# File Generation Time:  05/15/2026 at 07:21 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/10/2026 at 02:00 PM PDT
# Maximum Observed Stage:                       2.91 Feet
# Maximum Observed Flow:                        395 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/15/2026 at 08:00 AM PDT
# Maximum Forecast Stage:                       2.55 Feet
# Maximum Forecast Flow:                        322 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/10/2026 07 AM PDT            2.91            395                        Normal
  05/10/2026 08 AM PDT            2.91            395         0              Normal
  05/10/2026 09 AM PDT            2.91            395         0              Normal
  05/10/2026 10 AM PDT            2.91            395         0              Normal
  05/10/2026 11 AM PDT            2.91            395         0              Normal
  05/10/2026 12 PM PDT            2.90            393         -              Normal
  05/10/2026 01 PM PDT            2.90            393         0              Normal
  05/10/2026 02 PM PDT            2.91            395         +              Normal
  05/10/2026 03 PM PDT            2.90            393         -              Normal
  05/10/2026 04 PM PDT            2.90            393         0              Normal
  05/10/2026 05 PM PDT            2.89            391         -              Normal
  05/10/2026 06 PM PDT            2.89            391         0              Normal
  05/10/2026 07 PM PDT            2.88            389         -              Normal
  05/10/2026 08 PM PDT            2.88            389         0              Normal
  05/10/2026 09 PM PDT            2.88            389         0              Normal
  05/10/2026 10 PM PDT            2.88            389         0              Normal
  05/10/2026 11 PM PDT            2.87            387         -              Normal
  05/11/2026 12 AM PDT            2.86            385         -              Normal
  05/11/2026 01 AM PDT            2.86            385         0              Normal
  05/11/2026 02 AM PDT            2.86            385         0              Normal
  05/11/2026 03 AM PDT            2.85            382         -              Normal
  05/11/2026 04 AM PDT            2.85            382         0              Normal
  05/11/2026 05 AM PDT            2.84            380         -              Normal
  05/11/2026 06 AM PDT            2.84            380         0              Normal
  05/11/2026 07 AM PDT            2.84            380         0              Normal
  05/11/2026 08 AM PDT            2.83            378         -              Normal
  05/11/2026 09 AM PDT            2.83            378         0              Normal
  05/11/2026 10 AM PDT            2.83            378         0              Normal
  05/11/2026 11 AM PDT            2.83            378         0              Normal
  05/11/2026 12 PM PDT            2.84            380         +              Normal
  05/11/2026 01 PM PDT            2.83            378         -              Normal
  05/11/2026 02 PM PDT            2.83            378         0              Normal
  05/11/2026 03 PM PDT            2.83            378         0              Normal
  05/11/2026 04 PM PDT            2.84            380         +              Normal
  05/11/2026 05 PM PDT            2.83            378         -              Normal
  05/11/2026 06 PM PDT            2.83            378         0              Normal
  05/11/2026 07 PM PDT            2.82            376         -              Normal
  05/11/2026 08 PM PDT            2.81            374         -              Normal
  05/11/2026 09 PM PDT            2.81            374         0              Normal
  05/11/2026 10 PM PDT            2.81            374         0              Normal
  05/11/2026 11 PM PDT            2.80            372         -              Normal
  05/12/2026 12 AM PDT            2.80            372         0              Normal
  05/12/2026 01 AM PDT            2.80            372         0              Normal
  05/12/2026 02 AM PDT            2.79            370         -              Normal
  05/12/2026 03 AM PDT            2.79            370         0              Normal
  05/12/2026 04 AM PDT            2.79            370         0              Normal
  05/12/2026 05 AM PDT            2.79            370         0              Normal
  05/12/2026 06 AM PDT            2.79            370         0              Normal
  05/12/2026 07 AM PDT            2.79            370         0              Normal
  05/12/2026 08 AM PDT            2.79            370         0              Normal
  05/12/2026 09 AM PDT            2.79            370         0              Normal
  05/12/2026 10 AM PDT            2.78            368         -              Normal
  05/12/2026 11 AM PDT            2.78            368         0              Normal
  05/12/2026 12 PM PDT            2.78            368         0              Normal
  05/12/2026 01 PM PDT            2.77            366         -              Normal
  05/12/2026 02 PM PDT            2.77            366         0              Normal
  05/12/2026 03 PM PDT            2.76            364         -              Normal
  05/12/2026 04 PM PDT            2.76            364         0              Normal
  05/12/2026 05 PM PDT            2.76            364         0              Normal
  05/12/2026 06 PM PDT            2.76            364         0              Normal
  05/12/2026 07 PM PDT            2.75            361         -              Normal
  05/12/2026 08 PM PDT            2.75            361         0              Normal
  05/12/2026 09 PM PDT            2.75            361         0              Normal
  05/12/2026 10 PM PDT            2.75            361         0              Normal
  05/12/2026 11 PM PDT            2.74            359         -              Normal
  05/13/2026 12 AM PDT            2.73            357         -              Normal
  05/13/2026 01 AM PDT            2.73            357         0              Normal
  05/13/2026 02 AM PDT            2.72            355         -              Normal
  05/13/2026 03 AM PDT            2.72            355         0              Normal
  05/13/2026 04 AM PDT            2.71            353         -              Normal
  05/13/2026 05 AM PDT            2.71            353         0              Normal
  05/13/2026 06 AM PDT            2.71            353         0              Normal
  05/13/2026 07 AM PDT            2.71            353         0              Normal
  05/13/2026 08 AM PDT            2.70            351         -              Normal
  05/13/2026 09 AM PDT            2.69            349         -              Normal
  05/13/2026 10 AM PDT            2.70            351         +              Normal
  05/13/2026 11 AM PDT            2.70            351         0              Normal
  05/13/2026 12 PM PDT            2.69            349         -              Normal
  05/13/2026 01 PM PDT            2.69            349         0              Normal
  05/13/2026 02 PM PDT            2.69            349         0              Normal
  05/13/2026 03 PM PDT            2.68            347         -              Normal
  05/13/2026 04 PM PDT            2.69            349         +              Normal
  05/13/2026 05 PM PDT            2.68            347         -              Normal
  05/13/2026 06 PM PDT            2.67            345         -              Normal
  05/13/2026 07 PM PDT            2.66            343         -              Normal
  05/13/2026 08 PM PDT            2.66            343         0              Normal
  05/13/2026 09 PM PDT            2.65            341         -              Normal
  05/13/2026 10 PM PDT            2.64            339         -              Normal
  05/13/2026 11 PM PDT            2.64            339         0              Normal
  05/14/2026 12 AM PDT            2.63            337         -              Normal
  05/14/2026 01 AM PDT            2.63            337         0              Normal
  05/14/2026 02 AM PDT            2.63            337         0              Normal
  05/14/2026 03 AM PDT            2.62            335         -              Normal
  05/14/2026 04 AM PDT            2.62            335         0              Normal
  05/14/2026 05 AM PDT            2.62            335         0              Normal
  05/14/2026 06 AM PDT            2.61            333         -              Normal
  05/14/2026 07 AM PDT            2.62            335         +              Normal
  05/14/2026 08 AM PDT            2.61            333         -              Normal
  05/14/2026 09 AM PDT            2.61            333         0              Normal
  05/14/2026 10 AM PDT            2.61            333         0              Normal
  05/14/2026 11 AM PDT            2.61            333         0              Normal
  05/14/2026 12 PM PDT            2.62            335         +              Normal
  05/14/2026 01 PM PDT            2.61            333         -              Normal
  05/14/2026 02 PM PDT            2.62            335         +              Normal
  05/14/2026 03 PM PDT            2.61            333         -              Normal
  05/14/2026 04 PM PDT            2.60            331         -              Normal
  05/14/2026 05 PM PDT            2.60            331         0              Normal
  05/14/2026 06 PM PDT            2.59            329         -              Normal
  05/14/2026 07 PM PDT            2.59            329         0              Normal
  05/14/2026 08 PM PDT            2.59            329         0              Normal
  05/14/2026 09 PM PDT            2.58            327         -              Normal
  05/14/2026 10 PM PDT            2.59            329         +              Normal
  05/14/2026 11 PM PDT            2.58            327         -              Normal
  05/15/2026 12 AM PDT            2.58            327         0              Normal
  05/15/2026 01 AM PDT            2.57            325         -              Normal
  05/15/2026 02 AM PDT            2.57            325         0              Normal
  05/15/2026 03 AM PDT            2.57            325         0              Normal
  05/15/2026 04 AM PDT            2.56            324         -              Normal
  05/15/2026 05 AM PDT            2.56            324         0              Normal
  05/15/2026 06 AM PDT            2.56            324         0              Normal
  05/15/2026 07 AM PDT            2.55            322         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/15/2026 08 AM PDT            2.55            322                        Normal
  05/15/2026 09 AM PDT            2.54            320         -              Normal
  05/15/2026 10 AM PDT            2.54            320         0              Normal
  05/15/2026 11 AM PDT            2.54            320         0              Normal
  05/15/2026 12 PM PDT            2.54            320         0              Normal
  05/15/2026 01 PM PDT            2.53            318         -              Normal
  05/15/2026 02 PM PDT            2.53            318         0              Normal
  05/15/2026 03 PM PDT            2.53            318         0              Normal
  05/15/2026 04 PM PDT            2.52            316         -              Normal
  05/15/2026 05 PM PDT            2.52            316         0              Normal
  05/15/2026 06 PM PDT            2.51            314         -              Normal
  05/15/2026 07 PM PDT            2.51            314         0              Normal
  05/15/2026 08 PM PDT            2.50            312         -              Normal
  05/15/2026 09 PM PDT            2.50            312         0              Normal
  05/15/2026 10 PM PDT            2.50            312         0              Normal
  05/15/2026 11 PM PDT            2.50            312         0              Normal
  05/16/2026 12 AM PDT            2.49            310         -              Normal
  05/16/2026 01 AM PDT            2.49            310         0              Normal
  05/16/2026 02 AM PDT            2.49            310         0              Normal
  05/16/2026 03 AM PDT            2.48            308         -              Normal
  05/16/2026 04 AM PDT            2.48            308         0              Normal
  05/16/2026 05 AM PDT            2.48            308         0              Normal
  05/16/2026 06 AM PDT            2.48            308         0              Normal
  05/16/2026 07 AM PDT            2.48            308         0              Normal
  05/16/2026 08 AM PDT            2.47            306         -              Normal
  05/16/2026 09 AM PDT            2.47            306         0              Normal
  05/16/2026 10 AM PDT            2.47            306         0              Normal
  05/16/2026 11 AM PDT            2.47            306         0              Normal
  05/16/2026 12 PM PDT            2.46            305         -              Normal
  05/16/2026 01 PM PDT            2.46            305         0              Normal
  05/16/2026 02 PM PDT            2.46            305         0              Normal
  05/16/2026 03 PM PDT            2.46            305         0              Normal
  05/16/2026 04 PM PDT            2.46            305         0              Normal
  05/16/2026 05 PM PDT            2.45            303         -              Normal
  05/16/2026 06 PM PDT            2.45            303         0              Normal
  05/16/2026 07 PM PDT            2.45            303         0              Normal
  05/16/2026 08 PM PDT            2.44            301         -              Normal
  05/16/2026 09 PM PDT            2.44            301         0              Normal
  05/16/2026 10 PM PDT            2.44            301         0              Normal
  05/16/2026 11 PM PDT            2.44            301         0              Normal
  05/17/2026 12 AM PDT            2.44            301         0              Normal
  05/17/2026 01 AM PDT            2.43            299         -              Normal
  05/17/2026 02 AM PDT            2.43            299         0              Normal
  05/17/2026 03 AM PDT            2.43            299         0              Normal
  05/17/2026 04 AM PDT            2.43            299         0              Normal
  05/17/2026 05 AM PDT            2.42            297         -              Normal
  05/17/2026 06 AM PDT            2.42            297         0              Normal
  05/17/2026 07 AM PDT            2.42            297         0              Normal
  05/17/2026 08 AM PDT            2.42            297         0              Normal
  05/17/2026 09 AM PDT            2.41            295         -              Normal
  05/17/2026 10 AM PDT            2.41            295         0              Normal
  05/17/2026 11 AM PDT            2.41            295         0              Normal
  05/17/2026 12 PM PDT            2.41            295         0              Normal
  05/17/2026 01 PM PDT            2.40            294         -              Normal
  05/17/2026 02 PM PDT            2.40            294         0              Normal
  05/17/2026 03 PM PDT            2.40            294         0              Normal
  05/17/2026 04 PM PDT            2.40            294         0              Normal
  05/17/2026 05 PM PDT            2.40            294         0              Normal
  05/17/2026 06 PM PDT            2.39            292         -              Normal
  05/17/2026 07 PM PDT            2.39            292         0              Normal
  05/17/2026 08 PM PDT            2.38            290         -              Normal
  05/17/2026 09 PM PDT            2.38            290         0              Normal
  05/17/2026 10 PM PDT            2.38            290         0              Normal
  05/17/2026 11 PM PDT            2.38            290         0              Normal
  05/18/2026 12 AM PDT            2.38            290         0              Normal
  05/18/2026 01 AM PDT            2.37            288         -              Normal
  05/18/2026 02 AM PDT            2.37            288         0              Normal
  05/18/2026 03 AM PDT            2.37            288         0              Normal
  05/18/2026 04 AM PDT            2.37            288         0              Normal
  05/18/2026 05 AM PDT            2.37            288         0              Normal
  05/18/2026 06 AM PDT            2.36            286         -              Normal
  05/18/2026 07 AM PDT            2.36            286         0              Normal
  05/18/2026 08 AM PDT            2.36            286         0              Normal
  05/18/2026 09 AM PDT            2.35            285         -              Normal
  05/18/2026 10 AM PDT            2.35            285         0              Normal
  05/18/2026 11 AM PDT            2.35            285         0              Normal
  05/18/2026 12 PM PDT            2.35            285         0              Normal
  05/18/2026 01 PM PDT            2.35            285         0              Normal
  05/18/2026 02 PM PDT            2.34            283         -              Normal
  05/18/2026 03 PM PDT            2.34            283         0              Normal
  05/18/2026 04 PM PDT            2.34            283         0              Normal
  05/18/2026 05 PM PDT            2.34            283         0              Normal
  05/18/2026 06 PM PDT            2.33            281         -              Normal
  05/18/2026 07 PM PDT            2.33            281         0              Normal
  05/18/2026 08 PM PDT            2.33            281         0              Normal
  05/18/2026 09 PM PDT            2.32            279         -              Normal
  05/18/2026 10 PM PDT            2.32            279         0              Normal
  05/18/2026 11 PM PDT            2.32            279         0              Normal
  05/19/2026 12 AM PDT            2.32            279         0              Normal
  05/19/2026 01 AM PDT            2.31            277         -              Normal
  05/19/2026 02 AM PDT            2.31            277         0              Normal
  05/19/2026 03 AM PDT            2.31            277         0              Normal
  05/19/2026 04 AM PDT            2.31            277         0              Normal
  05/19/2026 05 AM PDT            2.31            277         0              Normal
  05/19/2026 06 AM PDT            2.30            276         -              Normal
  05/19/2026 07 AM PDT            2.30            276         0              Normal
  05/19/2026 08 AM PDT            2.30            276         0              Normal
  05/19/2026 09 AM PDT            2.29            274         -              Normal
  05/19/2026 10 AM PDT            2.29            274         0              Normal
  05/19/2026 11 AM PDT            2.29            274         0              Normal
  05/19/2026 12 PM PDT            2.29            274         0              Normal
  05/19/2026 01 PM PDT            2.29            274         0              Normal
  05/19/2026 02 PM PDT            2.28            272         -              Normal
  05/19/2026 03 PM PDT            2.28            272         0              Normal
  05/19/2026 04 PM PDT            2.28            272         0              Normal
  05/19/2026 05 PM PDT            2.28            272         0              Normal
  05/19/2026 06 PM PDT            2.27            271         -              Normal
  05/19/2026 07 PM PDT            2.27            271         0              Normal
  05/19/2026 08 PM PDT            2.27            271         0              Normal
  05/19/2026 09 PM PDT            2.26            269         -              Normal
  05/19/2026 10 PM PDT            2.26            269         0              Normal
  05/19/2026 11 PM PDT            2.26            269         0              Normal
  05/20/2026 12 AM PDT            2.26            269         0              Normal
  05/20/2026 01 AM PDT            2.25            267         -              Normal
  05/20/2026 02 AM PDT            2.25            267         0              Normal
  05/20/2026 03 AM PDT            2.25            267         0              Normal
  05/20/2026 04 AM PDT            2.25            267         0              Normal
  05/20/2026 05 AM PDT            2.24            265         -              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.