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 Feet
Location: Storey County in NevadaBulletin Group: Eastern SierraRiver Group: Eastern Sierra
Issuance Time: Dec 27 2025 at 9:38 AM PSTNext Issuance: Dec 28 2025 at 9:00 AM PST
Action/Monitor: 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:  12/27/2025 at 09:43 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  12/25/2025 at 02:00 AM PST
# Maximum Observed Stage:                       7.99 Feet
# Maximum Observed Flow:                        3994 cfs
#
# Earliest Date & Time of Maximum Forecast:     12/27/2025 at 10:00 AM PST
# Maximum Forecast Stage:                       4.58 Feet
# Maximum Forecast Flow:                        1056 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  12/22/2025 09 AM PST            5.86           1948                        Normal
  12/22/2025 10 AM PST            5.86           1948         0              Normal
  12/22/2025 11 AM PST            5.89           1971         +              Normal
  12/22/2025 12 PM PST            5.99           2051         +              Normal
  12/22/2025 01 PM PST            6.08           2125         +              Normal
  12/22/2025 02 PM PST            6.13           2166         +              Normal
  12/22/2025 03 PM PST            6.20           2225         +              Normal
  12/22/2025 04 PM PST            6.22           2242         +              Normal
  12/22/2025 05 PM PST            6.28           2293         +              Normal
  12/22/2025 06 PM PST            6.37           2371         +              Normal
  12/22/2025 07 PM PST            6.44           2433         +              Normal
  12/22/2025 08 PM PST            6.50           2487         +              Normal
  12/22/2025 09 PM PST            6.58           2558         +              Normal
  12/22/2025 10 PM PST            6.68           2648         +              Normal
  12/22/2025 11 PM PST            6.74           2703         +              Normal
  12/23/2025 12 AM PST            6.76           2721         +              Normal
  12/23/2025 01 AM PST            6.81           2768         +              Normal
  12/23/2025 02 AM PST            6.77           2731         -              Normal
  12/23/2025 03 AM PST            6.67           2639         -              Normal
  12/23/2025 04 AM PST            6.53           2513         -              Normal
  12/23/2025 05 AM PST            6.42           2415         -              Normal
  12/23/2025 06 AM PST            6.25           2267         -              Normal
  12/23/2025 07 AM PST            6.16           2191         -              Normal
  12/23/2025 08 AM PST            5.97           2035         -              Normal
  12/23/2025 09 AM PST            5.96           2027         -              Normal
  12/23/2025 10 AM PST            5.93           2003         -              Normal
  12/23/2025 11 AM PST            5.85           1940         -              Normal
  12/23/2025 12 PM PST            5.76           1870         -              Normal
  12/23/2025 01 PM PST            5.70           1824         -              Normal
  12/23/2025 02 PM PST            5.63           1772         -              Normal
  12/23/2025 03 PM PST            5.56           1720         -              Normal
  12/23/2025 04 PM PST            5.37           1570         -              Normal
  12/23/2025 05 PM PST            5.28           1501         -              Normal
  12/23/2025 06 PM PST            5.20           1440         -              Normal
  12/23/2025 07 PM PST            5.15           1404         -              Normal
  12/23/2025 08 PM PST            5.12           1382         -              Normal
  12/23/2025 09 PM PST            5.05           1332         -              Normal
  12/23/2025 10 PM PST            4.99           1290         -              Normal
  12/23/2025 11 PM PST            4.92           1242         -              Normal
  12/24/2025 12 AM PST            4.88           1219         -              Normal
  12/24/2025 01 AM PST            4.84           1197         -              Normal
  12/24/2025 02 AM PST            4.82           1185         -              Normal
  12/24/2025 03 AM PST            4.75           1147         -              Normal
  12/24/2025 04 AM PST            4.70           1120         -              Normal
  12/24/2025 05 AM PST            4.70           1120         0              Normal
  12/24/2025 06 AM PST            4.69           1114         -              Normal
  12/24/2025 07 AM PST            4.68           1109         -              Normal
  12/24/2025 08 AM PST            4.66           1098         -              Normal
  12/24/2025 09 AM PST            4.58           1056         -              Normal
  12/24/2025 10 AM PST            4.59           1061         +              Normal
  12/24/2025 11 AM PST            4.63           1082         +              Normal
  12/24/2025 12 PM PST            4.77           1158         +              Normal
  12/24/2025 01 PM PST            4.84           1197         +              Normal
  12/24/2025 02 PM PST            4.93           1249         +              Normal
  12/24/2025 03 PM PST            4.99           1290         +              Normal
  12/24/2025 04 PM PST            5.17           1418         +              Normal
  12/24/2025 05 PM PST            5.48           1657         +              Normal
  12/24/2025 06 PM PST            5.99           2051         +              Normal
  12/24/2025 07 PM PST            6.49           2478         +              Normal
  12/24/2025 08 PM PST            6.71           2675         +              Normal
  12/24/2025 09 PM PST            7.13           3076         +              Normal
  12/24/2025 10 PM PST            7.38           3329         +              Normal
  12/24/2025 11 PM PST            7.69           3658         +              Normal
  12/25/2025 12 AM PST            7.80           3780         +              Normal
  12/25/2025 01 AM PST            7.94           3937         +              Normal
  12/25/2025 02 AM PST            7.99           3994         +              Normal
  12/25/2025 03 AM PST            7.89           3880         -              Normal
  12/25/2025 04 AM PST            7.78           3757         -              Normal
  12/25/2025 05 AM PST            7.59           3550         -              Normal
  12/25/2025 06 AM PST            7.42           3371         -              Normal
  12/25/2025 07 AM PST            7.22           3166         -              Normal
  12/25/2025 08 AM PST            7.10           3046         -              Normal
  12/25/2025 09 AM PST            7.04           2987         -              Normal
  12/25/2025 10 AM PST            6.90           2853         -              Normal
  12/25/2025 11 AM PST            6.78           2740         -              Normal
  12/25/2025 12 PM PST            6.71           2675         -              Normal
  12/25/2025 01 PM PST            6.71           2675         0              Normal
  12/25/2025 02 PM PST            6.62           2594         -              Normal
  12/25/2025 03 PM PST            6.65           2621         +              Normal
  12/25/2025 04 PM PST            6.64           2612         -              Normal
  12/25/2025 05 PM PST            6.61           2585         -              Normal
  12/25/2025 06 PM PST            6.53           2513         -              Normal
  12/25/2025 07 PM PST            6.45           2442         -              Normal
  12/25/2025 08 PM PST            6.41           2407         -              Normal
  12/25/2025 09 PM PST            6.39           2389         -              Normal
  12/25/2025 10 PM PST            6.28           2293         -              Normal
  12/25/2025 11 PM PST            6.24           2259         -              Normal
  12/26/2025 12 AM PST            6.13           2166         -              Normal
  12/26/2025 01 AM PST            6.05           2100         -              Normal
  12/26/2025 02 AM PST            5.95           2019         -              Normal
  12/26/2025 03 AM PST            5.91           1987         -              Normal
  12/26/2025 04 AM PST            5.85           1940         -              Normal
  12/26/2025 05 AM PST            5.90           1979         +              Normal
  12/26/2025 06 AM PST            5.91           1987         +              Normal
  12/26/2025 07 AM PST            5.97           2035         +              Normal
  12/26/2025 08 AM PST            6.01           2067         +              Normal
  12/26/2025 09 AM PST            6.09           2133         +              Normal
  12/26/2025 10 AM PST            6.14           2175         +              Normal
  12/26/2025 11 AM PST            6.13           2166         -              Normal
  12/26/2025 12 PM PST            6.08           2125         -              Normal
  12/26/2025 01 PM PST            6.02           2076         -              Normal
  12/26/2025 02 PM PST            5.92           1995         -              Normal
  12/26/2025 03 PM PST            5.81           1909         -              Normal
  12/26/2025 04 PM PST            5.71           1832         -              Normal
  12/26/2025 05 PM PST            5.69           1817         -              Normal
  12/26/2025 06 PM PST            5.64           1779         -              Normal
  12/26/2025 07 PM PST            5.48           1657         -              Normal
  12/26/2025 08 PM PST            5.44           1625         -              Normal
  12/26/2025 09 PM PST            5.42           1609         -              Normal
  12/26/2025 10 PM PST            5.30           1516         -              Normal
  12/26/2025 11 PM PST            5.29           1508         -              Normal
  12/27/2025 12 AM PST            5.15           1404         -              Normal
  12/27/2025 01 AM PST            5.06           1339         -              Normal
  12/27/2025 02 AM PST            4.95           1262         -              Normal
  12/27/2025 03 AM PST            4.88           1219         -              Normal
  12/27/2025 04 AM PST            4.81           1180         -              Normal
  12/27/2025 05 AM PST            4.78           1163         -              Normal
  12/27/2025 06 AM PST            4.74           1141         -              Normal
  12/27/2025 07 AM PST            4.72           1130         -              Normal
  12/27/2025 08 AM PST            4.67           1103         -              Normal
  12/27/2025 09 AM PST            4.63           1082         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  12/27/2025 10 AM PST            4.58           1056                        Normal
  12/27/2025 11 AM PST            4.53           1030         -              Normal
  12/27/2025 12 PM PST            4.46            994         -              Normal
  12/27/2025 01 PM PST            4.38            954         -              Normal
  12/27/2025 02 PM PST            4.28            905         -              Normal
  12/27/2025 03 PM PST            4.19            862         -              Normal
  12/27/2025 04 PM PST            4.12            830         -              Normal
  12/27/2025 05 PM PST            4.06            802         -              Normal
  12/27/2025 06 PM PST            4.00            775         -              Normal
  12/27/2025 07 PM PST            3.94            749         -              Normal
  12/27/2025 08 PM PST            3.88            723         -              Normal
  12/27/2025 09 PM PST            3.82            698         -              Normal
  12/27/2025 10 PM PST            3.75            669         -              Normal
  12/27/2025 11 PM PST            3.69            644         -              Normal
  12/28/2025 12 AM PST            3.67            636         -              Normal
  12/28/2025 01 AM PST            3.66            632         -              Normal
  12/28/2025 02 AM PST            3.65            628         -              Normal
  12/28/2025 03 AM PST            3.64            623         -              Normal
  12/28/2025 04 AM PST            3.63            618         -              Normal
  12/28/2025 05 AM PST            3.62            614         -              Normal
  12/28/2025 06 AM PST            3.62            614         0              Normal
  12/28/2025 07 AM PST            3.61            609         -              Normal
  12/28/2025 08 AM PST            3.61            609         0              Normal
  12/28/2025 09 AM PST            3.60            605         -              Normal
  12/28/2025 10 AM PST            3.60            605         0              Normal
  12/28/2025 11 AM PST            3.59            600         -              Normal
  12/28/2025 12 PM PST            3.59            600         0              Normal
  12/28/2025 01 PM PST            3.58            596         -              Normal
  12/28/2025 02 PM PST            3.58            596         0              Normal
  12/28/2025 03 PM PST            3.57            591         -              Normal
  12/28/2025 04 PM PST            3.56            587         -              Normal
  12/28/2025 05 PM PST            3.56            587         0              Normal
  12/28/2025 06 PM PST            3.55            583         -              Normal
  12/28/2025 07 PM PST            3.55            583         0              Normal
  12/28/2025 08 PM PST            3.54            578         -              Normal
  12/28/2025 09 PM PST            3.54            578         0              Normal
  12/28/2025 10 PM PST            3.53            574         -              Normal
  12/28/2025 11 PM PST            3.53            574         0              Normal
  12/29/2025 12 AM PST            3.52            570         -              Normal
  12/29/2025 01 AM PST            3.52            570         0              Normal
  12/29/2025 02 AM PST            3.51            565         -              Normal
  12/29/2025 03 AM PST            3.51            565         0              Normal
  12/29/2025 04 AM PST            3.50            561         -              Normal
  12/29/2025 05 AM PST            3.50            561         0              Normal
  12/29/2025 06 AM PST            3.49            557         -              Normal
  12/29/2025 07 AM PST            3.49            557         0              Normal
  12/29/2025 08 AM PST            3.48            552         -              Normal
  12/29/2025 09 AM PST            3.48            552         0              Normal
  12/29/2025 10 AM PST            3.47            548         -              Normal
  12/29/2025 11 AM PST            3.47            548         0              Normal
  12/29/2025 12 PM PST            3.46            544         -              Normal
  12/29/2025 01 PM PST            3.46            544         0              Normal
  12/29/2025 02 PM PST            3.46            544         0              Normal
  12/29/2025 03 PM PST            3.45            540         -              Normal
  12/29/2025 04 PM PST            3.45            540         0              Normal
  12/29/2025 05 PM PST            3.44            536         -              Normal
  12/29/2025 06 PM PST            3.44            536         0              Normal
  12/29/2025 07 PM PST            3.44            536         0              Normal
  12/29/2025 08 PM PST            3.43            531         -              Normal
  12/29/2025 09 PM PST            3.43            531         0              Normal
  12/29/2025 10 PM PST            3.42            527         -              Normal
  12/29/2025 11 PM PST            3.42            527         0              Normal
  12/30/2025 12 AM PST            3.42            527         0              Normal
  12/30/2025 01 AM PST            3.41            523         -              Normal
  12/30/2025 02 AM PST            3.41            523         0              Normal
  12/30/2025 03 AM PST            3.41            523         0              Normal
  12/30/2025 04 AM PST            3.40            519         -              Normal
  12/30/2025 05 AM PST            3.40            519         0              Normal
  12/30/2025 06 AM PST            3.40            519         0              Normal
  12/30/2025 07 AM PST            3.39            515         -              Normal
  12/30/2025 08 AM PST            3.39            515         0              Normal
  12/30/2025 09 AM PST            3.38            511         -              Normal
  12/30/2025 10 AM PST            3.38            511         0              Normal
  12/30/2025 11 AM PST            3.38            511         0              Normal
  12/30/2025 12 PM PST            3.37            507         -              Normal
  12/30/2025 01 PM PST            3.37            507         0              Normal
  12/30/2025 02 PM PST            3.37            507         0              Normal
  12/30/2025 03 PM PST            3.36            503         -              Normal
  12/30/2025 04 PM PST            3.36            503         0              Normal
  12/30/2025 05 PM PST            3.36            503         0              Normal
  12/30/2025 06 PM PST            3.35            499         -              Normal
  12/30/2025 07 PM PST            3.35            499         0              Normal
  12/30/2025 08 PM PST            3.35            499         0              Normal
  12/30/2025 09 PM PST            3.35            499         0              Normal
  12/30/2025 10 PM PST            3.34            495         -              Normal
  12/30/2025 11 PM PST            3.34            495         0              Normal
  12/31/2025 12 AM PST            3.34            495         0              Normal
  12/31/2025 01 AM PST            3.34            495         0              Normal
  12/31/2025 02 AM PST            3.34            495         0              Normal
  12/31/2025 03 AM PST            3.33            491         -              Normal
  12/31/2025 04 AM PST            3.33            491         0              Normal
  12/31/2025 05 AM PST            3.33            491         0              Normal
  12/31/2025 06 AM PST            3.33            491         0              Normal
  12/31/2025 07 AM PST            3.33            491         0              Normal
  12/31/2025 08 AM PST            3.33            491         0              Normal
  12/31/2025 09 AM PST            3.33            491         0              Normal
  12/31/2025 10 AM PST            3.32            487         -              Normal
  12/31/2025 11 AM PST            3.32            487         0              Normal
  12/31/2025 12 PM PST            3.31            483         -              Normal
  12/31/2025 01 PM PST            3.31            483         0              Normal
  12/31/2025 02 PM PST            3.31            483         0              Normal
  12/31/2025 03 PM PST            3.30            479         -              Normal
  12/31/2025 04 PM PST            3.30            479         0              Normal
  12/31/2025 05 PM PST            3.29            475         -              Normal
  12/31/2025 06 PM PST            3.29            475         0              Normal
  12/31/2025 07 PM PST            3.29            475         0              Normal
  12/31/2025 08 PM PST            3.28            471         -              Normal
  12/31/2025 09 PM PST            3.28            471         0              Normal
  12/31/2025 10 PM PST            3.28            471         0              Normal
  12/31/2025 11 PM PST            3.29            475         +              Normal
  01/01/2026 12 AM PST            3.29            475         0              Normal
  01/01/2026 01 AM PST            3.29            475         0              Normal
  01/01/2026 02 AM PST            3.29            475         0              Normal
  01/01/2026 03 AM PST            3.29            475         0              Normal
  01/01/2026 04 AM PST            3.29            475         0              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.