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

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TRUCKEE RIVER - BELOW DERBY DAM (TBDN2)
Latitude: 39.58º NLongitude: 119.44º WElevation: 4200 FeetForecast Type: Unofficial Location
Location: Storey County in NevadaBulletin Group: Eastern SierraRiver Group: Eastern Sierra
Issuance Time: Oct 21 2026 at 7:24 AM PDTNext Issuance: Oct 22 2026 at 9:00 AM PDT
Action: 10.0 FeetMinor Flood: 11.0 FeetModerate Flood: N/A Major Flood: N/A


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Truckee River - Below Derby Dam (TBDN2)
#
# File Generation Time:  10/21/2026 at 07:25 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  10/20/2026 at 09:00 PM PDT
# Maximum Observed Stage:                       2.75 Feet
# Maximum Observed Flow:                        304 cfs
#
# Earliest Date & Time of Maximum Forecast:     10/22/2026 at 06:00 AM PDT
# Maximum Forecast Stage:                       3.69 Feet
# Maximum Forecast Flow:                        660 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  10/16/2026 07 AM PDT            2.53            242                        Normal
  10/16/2026 08 AM PDT            2.53            242         0              Normal
  10/16/2026 09 AM PDT            2.53            242         0              Normal
  10/16/2026 10 AM PDT            2.53            242         0              Normal
  10/16/2026 11 AM PDT            2.55            248         +              Normal
  10/16/2026 12 PM PDT            2.63            269         +              Normal
  10/16/2026 01 PM PDT            2.59            258         -              Normal
  10/16/2026 02 PM PDT            2.56            250         -              Normal
  10/16/2026 03 PM PDT            2.54            245         -              Normal
  10/16/2026 04 PM PDT            2.51            237         -              Normal
  10/16/2026 05 PM PDT            2.51            237         0              Normal
  10/16/2026 06 PM PDT            2.51            237         0              Normal
  10/16/2026 07 PM PDT            2.52            240         +              Normal
  10/16/2026 08 PM PDT            2.54            245         +              Normal
  10/16/2026 09 PM PDT            2.57            253         +              Normal
  10/16/2026 10 PM PDT            2.58            256         +              Normal
  10/16/2026 11 PM PDT            2.57            253         -              Normal
  10/17/2026 12 AM PDT            2.57            253         0              Normal
  10/17/2026 01 AM PDT            2.56            250         -              Normal
  10/17/2026 02 AM PDT            2.56            250         0              Normal
  10/17/2026 03 AM PDT            2.55            248         -              Normal
  10/17/2026 04 AM PDT            2.54            245         -              Normal
  10/17/2026 05 AM PDT            2.53            242         -              Normal
  10/17/2026 06 AM PDT            2.53            242         0              Normal
  10/17/2026 07 AM PDT            2.55            248         +              Normal
  10/17/2026 08 AM PDT            2.58            256         +              Normal
  10/17/2026 09 AM PDT            2.58            256         0              Normal
  10/17/2026 10 AM PDT            2.57            253         -              Normal
  10/17/2026 11 AM PDT            2.59            258         +              Normal
  10/17/2026 12 PM PDT            2.59            258         0              Normal
  10/17/2026 01 PM PDT            2.56            250         -              Normal
  10/17/2026 02 PM PDT            2.54            245         -              Normal
  10/17/2026 03 PM PDT            2.56            250         +              Normal
  10/17/2026 04 PM PDT            2.54            245         -              Normal
  10/17/2026 05 PM PDT            2.55            248         +              Normal
  10/17/2026 06 PM PDT            2.51            237         -              Normal
  10/17/2026 07 PM PDT            2.53            242         +              Normal
  10/17/2026 08 PM PDT            2.55            248         +              Normal
  10/17/2026 09 PM PDT            2.52            240         -              Normal
  10/17/2026 10 PM PDT            2.56            250         +              Normal
  10/17/2026 11 PM PDT            2.56            250         0              Normal
  10/18/2026 12 AM PDT            2.56            250         0              Normal
  10/18/2026 01 AM PDT            2.60            261         +              Normal
  10/18/2026 02 AM PDT            2.58            256         -              Normal
  10/18/2026 03 AM PDT            2.57            253         -              Normal
  10/18/2026 04 AM PDT            2.56            250         -              Normal
  10/18/2026 05 AM PDT            2.55            248         -              Normal
  10/18/2026 06 AM PDT            2.55            248         0              Normal
  10/18/2026 07 AM PDT            2.51            237         -              Normal
  10/18/2026 08 AM PDT            2.53            242         +              Normal
  10/18/2026 09 AM PDT            2.52            240         -              Normal
  10/18/2026 10 AM PDT            2.52            240         0              Normal
  10/18/2026 11 AM PDT            2.52            240         0              Normal
  10/18/2026 12 PM PDT            2.55            248         +              Normal
  10/18/2026 01 PM PDT            2.59            258         +              Normal
  10/18/2026 02 PM PDT            2.59            258         0              Normal
  10/18/2026 03 PM PDT            2.61            264         +              Normal
  10/18/2026 04 PM PDT            2.59            258         -              Normal
  10/18/2026 05 PM PDT            2.60            261         +              Normal
  10/18/2026 06 PM PDT            2.58            256         -              Normal
  10/18/2026 07 PM PDT            2.56            250         -              Normal
  10/18/2026 08 PM PDT            2.53            242         -              Normal
  10/18/2026 09 PM PDT            2.51            237         -              Normal
  10/18/2026 10 PM PDT            2.48            230         -              Normal
  10/18/2026 11 PM PDT            2.49            232         +              Normal
  10/19/2026 12 AM PDT            2.53            242         +              Normal
  10/19/2026 01 AM PDT            2.56            250         +              Normal
  10/19/2026 02 AM PDT            2.58            256         +              Normal
  10/19/2026 03 AM PDT            2.57            253         -              Normal
  10/19/2026 04 AM PDT            2.60            261         +              Normal
  10/19/2026 05 AM PDT            2.56            250         -              Normal
  10/19/2026 06 AM PDT            2.57            253         +              Normal
  10/19/2026 07 AM PDT            2.58            256         +              Normal
  10/19/2026 08 AM PDT            2.60            261         +              Normal
  10/19/2026 09 AM PDT            2.61            264         +              Normal
  10/19/2026 10 AM PDT            2.64            272         +              Normal
  10/19/2026 11 AM PDT            2.64            272         0              Normal
  10/19/2026 12 PM PDT            2.65            275         +              Normal
  10/19/2026 01 PM PDT            2.65            275         0              Normal
  10/19/2026 02 PM PDT            2.66            278         +              Normal
  10/19/2026 03 PM PDT            2.71            292         +              Normal
  10/19/2026 04 PM PDT            2.67            280         -              Normal
  10/19/2026 05 PM PDT            2.69            286         +              Normal
  10/19/2026 06 PM PDT            2.69            286         0              Normal
  10/19/2026 07 PM PDT            2.69            286         0              Normal
  10/19/2026 08 PM PDT            2.70            289         +              Normal
  10/19/2026 09 PM PDT            2.69            286         -              Normal
  10/19/2026 10 PM PDT            2.67            280         -              Normal
  10/19/2026 11 PM PDT            2.62            267         -              Normal
  10/20/2026 12 AM PDT            2.67            280         +              Normal
  10/20/2026 01 AM PDT            2.68            283         +              Normal
  10/20/2026 02 AM PDT            2.64            272         -              Normal
  10/20/2026 03 AM PDT            2.65            275         +              Normal
  10/20/2026 04 AM PDT            2.65            275         0              Normal
  10/20/2026 05 AM PDT            2.68            283         +              Normal
  10/20/2026 06 AM PDT            2.68            283         0              Normal
  10/20/2026 07 AM PDT            2.70            289         +              Normal
  10/20/2026 08 AM PDT            2.69            286         -              Normal
  10/20/2026 09 AM PDT            2.69            286         0              Normal
  10/20/2026 10 AM PDT            2.69            286         0              Normal
  10/20/2026 11 AM PDT            2.68            283         -              Normal
  10/20/2026 12 PM PDT            2.65            275         -              Normal
  10/20/2026 01 PM PDT            2.63            269         -              Normal
  10/20/2026 02 PM PDT            2.64            272         +              Normal
  10/20/2026 03 PM PDT            2.64            272         0              Normal
  10/20/2026 04 PM PDT            2.63            269         -              Normal
  10/20/2026 05 PM PDT            2.64            272         +              Normal
  10/20/2026 06 PM PDT            2.68            283         +              Normal
  10/20/2026 07 PM PDT            2.71            292         +              Normal
  10/20/2026 08 PM PDT            2.75            304         +              Normal
  10/20/2026 09 PM PDT            2.75            304         0              Normal
  10/20/2026 10 PM PDT            2.72            295         -              Normal
  10/20/2026 11 PM PDT            2.68            283         -              Normal
  10/21/2026 12 AM PDT            2.64            272         -              Normal
  10/21/2026 01 AM PDT            2.61            264         -              Normal
  10/21/2026 02 AM PDT            2.57            253         -              Normal
  10/21/2026 03 AM PDT            2.56            250         -              Normal
  10/21/2026 04 AM PDT            2.56            250         0              Normal
  10/21/2026 05 AM PDT            2.54            245         -              Normal
  10/21/2026 06 AM PDT            2.55            248         +              Normal
  10/21/2026 07 AM PDT            2.55            248         0              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  10/21/2026 08 AM PDT            2.54            245                        Normal
  10/21/2026 09 AM PDT            2.54            245         0              Normal
  10/21/2026 10 AM PDT            2.55            248         +              Normal
  10/21/2026 11 AM PDT            2.54            245         -              Normal
  10/21/2026 12 PM PDT            2.51            237         -              Normal
  10/21/2026 01 PM PDT            2.48            230         -              Normal
  10/21/2026 02 PM PDT            2.46            225         -              Normal
  10/21/2026 03 PM PDT            2.46            225         0              Normal
  10/21/2026 04 PM PDT            2.46            225         0              Normal
  10/21/2026 05 PM PDT            2.47            227         +              Normal
  10/21/2026 06 PM PDT            2.48            230         +              Normal
  10/21/2026 07 PM PDT            2.51            237         +              Normal
  10/21/2026 08 PM PDT            2.54            245         +              Normal
  10/21/2026 09 PM PDT            2.58            256         +              Normal
  10/21/2026 10 PM PDT            2.65            275         +              Normal
  10/21/2026 11 PM PDT            2.76            307         +              Normal
  10/22/2026 12 AM PDT            2.91            354         +              Normal
  10/22/2026 01 AM PDT            3.05            401         +              Normal
  10/22/2026 02 AM PDT            3.17            445         +              Normal
  10/22/2026 03 AM PDT            3.31            499         +              Normal
  10/22/2026 04 AM PDT            3.50            578         +              Normal
  10/22/2026 05 AM PDT            3.65            644         +              Normal
  10/22/2026 06 AM PDT            3.69            660         +              Normal
  10/22/2026 07 AM PDT            3.67            652         -              Normal
  10/22/2026 08 AM PDT            3.63            636         -              Normal
  10/22/2026 09 AM PDT            3.60            623         -              Normal
  10/22/2026 10 AM PDT            3.55            600         -              Normal
  10/22/2026 11 AM PDT            3.50            578         -              Normal
  10/22/2026 12 PM PDT            3.47            565         -              Normal
  10/22/2026 01 PM PDT            3.43            548         -              Normal
  10/22/2026 02 PM PDT            3.40            536         -              Normal
  10/22/2026 03 PM PDT            3.38            527         -              Normal
  10/22/2026 04 PM PDT            3.36            519         -              Normal
  10/22/2026 05 PM PDT            3.34            511         -              Normal
  10/22/2026 06 PM PDT            3.32            503         -              Normal
  10/22/2026 07 PM PDT            3.28            487         -              Normal
  10/22/2026 08 PM PDT            3.24            471         -              Normal
  10/22/2026 09 PM PDT            3.20            456         -              Normal
  10/22/2026 10 PM PDT            3.16            441         -              Normal
  10/22/2026 11 PM PDT            3.14            433         -              Normal
  10/23/2026 12 AM PDT            3.22            463         +              Normal
  10/23/2026 01 AM PDT            3.32            503         +              Normal
  10/23/2026 02 AM PDT            3.30            495         -              Normal
  10/23/2026 03 AM PDT            3.23            467         -              Normal
  10/23/2026 04 AM PDT            3.17            445         -              Normal
  10/23/2026 05 AM PDT            3.11            422         -              Normal
  10/23/2026 06 AM PDT            3.05            401         -              Normal
  10/23/2026 07 AM PDT            3.00            384         -              Normal
  10/23/2026 08 AM PDT            2.96            370         -              Normal
  10/23/2026 09 AM PDT            2.94            363         -              Normal
  10/23/2026 10 AM PDT            2.93            360         -              Normal
  10/23/2026 11 AM PDT            2.92            357         -              Normal
  10/23/2026 12 PM PDT            2.91            354         -              Normal
  10/23/2026 01 PM PDT            2.90            350         -              Normal
  10/23/2026 02 PM PDT            2.88            344         -              Normal
  10/23/2026 03 PM PDT            2.87            341         -              Normal
  10/23/2026 04 PM PDT            2.85            334         -              Normal
  10/23/2026 05 PM PDT            2.81            322         -              Normal
  10/23/2026 06 PM PDT            2.77            310         -              Normal
  10/23/2026 07 PM PDT            2.73            298         -              Normal
  10/23/2026 08 PM PDT            2.69            286         -              Normal
  10/23/2026 09 PM PDT            2.67            280         -              Normal
  10/23/2026 10 PM PDT            2.65            275         -              Normal
  10/23/2026 11 PM PDT            2.63            269         -              Normal
  10/24/2026 12 AM PDT            2.61            264         -              Normal
  10/24/2026 01 AM PDT            2.60            261         -              Normal
  10/24/2026 02 AM PDT            2.59            258         -              Normal
  10/24/2026 03 AM PDT            2.58            256         -              Normal
  10/24/2026 04 AM PDT            2.57            253         -              Normal
  10/24/2026 05 AM PDT            2.55            248         -              Normal
  10/24/2026 06 AM PDT            2.54            245         -              Normal
  10/24/2026 07 AM PDT            2.52            240         -              Normal
  10/24/2026 08 AM PDT            2.50            235         -              Normal
  10/24/2026 09 AM PDT            2.49            232         -              Normal
  10/24/2026 10 AM PDT            2.48            230         -              Normal
  10/24/2026 11 AM PDT            2.47            227         -              Normal
  10/24/2026 12 PM PDT            2.47            227         0              Normal
  10/24/2026 01 PM PDT            2.46            225         -              Normal
  10/24/2026 02 PM PDT            2.46            225         0              Normal
  10/24/2026 03 PM PDT            2.46            225         0              Normal
  10/24/2026 04 PM PDT            2.45            222         -              Normal
  10/24/2026 05 PM PDT            2.45            222         0              Normal
  10/24/2026 06 PM PDT            2.45            222         0              Normal
  10/24/2026 07 PM PDT            2.45            222         0              Normal
  10/24/2026 08 PM PDT            2.44            220         -              Normal
  10/24/2026 09 PM PDT            2.44            220         0              Normal
  10/24/2026 10 PM PDT            2.44            220         0              Normal
  10/24/2026 11 PM PDT            2.44            220         0              Normal
  10/25/2026 12 AM PDT            2.44            220         0              Normal
  10/25/2026 01 AM PDT            2.44            220         0              Normal
  10/25/2026 02 AM PDT            2.44            220         0              Normal
  10/25/2026 03 AM PDT            2.43            217         -              Normal
  10/25/2026 04 AM PDT            2.43            217         0              Normal
  10/25/2026 05 AM PDT            2.44            220         +              Normal
  10/25/2026 06 AM PDT            2.44            220         0              Normal
  10/25/2026 07 AM PDT            2.44            220         0              Normal
  10/25/2026 08 AM PDT            2.44            220         0              Normal
  10/25/2026 09 AM PDT            2.44            220         0              Normal
  10/25/2026 10 AM PDT            2.43            217         -              Normal
  10/25/2026 11 AM PDT            2.43            217         0              Normal
  10/25/2026 12 PM PDT            2.43            217         0              Normal
  10/25/2026 01 PM PDT            2.43            217         0              Normal
  10/25/2026 02 PM PDT            2.43            217         0              Normal
  10/25/2026 03 PM PDT            2.43            217         0              Normal
  10/25/2026 04 PM PDT            2.43            217         0              Normal
  10/25/2026 05 PM PDT            2.43            217         0              Normal
  10/25/2026 06 PM PDT            2.43            217         0              Normal
  10/25/2026 07 PM PDT            2.43            217         0              Normal
  10/25/2026 08 PM PDT            2.43            217         0              Normal
  10/25/2026 09 PM PDT            2.43            217         0              Normal
  10/25/2026 10 PM PDT            2.43            217         0              Normal
  10/25/2026 11 PM PDT            2.43            217         0              Normal
  10/26/2026 12 AM PDT            2.43            217         0              Normal
  10/26/2026 01 AM PDT            2.43            217         0              Normal
  10/26/2026 02 AM PDT            2.43            217         0              Normal
  10/26/2026 03 AM PDT            2.43            217         0              Normal
  10/26/2026 04 AM PDT            2.43            217         0              Normal
  10/26/2026 05 AM PDT            2.44            220         +              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.