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: May 09 2026 at 7:26 AM PDTNext Issuance: May 10 2026 at 9:00 AM PDT
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:  05/09/2026 at 07:27 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  05/08/2026 at 02:00 PM PDT
# Maximum Observed Stage:                       4.24 Feet
# Maximum Observed Flow:                        959 cfs
#
# Earliest Date & Time of Maximum Forecast:     05/09/2026 at 05:00 PM PDT
# Maximum Forecast Stage:                       4.03 Feet
# Maximum Forecast Flow:                        857 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  05/04/2026 07 AM PDT            4.10            891                        Normal
  05/04/2026 08 AM PDT            4.09            886         -              Normal
  05/04/2026 09 AM PDT            4.09            886         0              Normal
  05/04/2026 10 AM PDT            4.06            872         -              Normal
  05/04/2026 11 AM PDT            4.04            862         -              Normal
  05/04/2026 12 PM PDT            4.08            881         +              Normal
  05/04/2026 01 PM PDT            4.14            910         +              Normal
  05/04/2026 02 PM PDT            4.15            915         +              Normal
  05/04/2026 03 PM PDT            4.12            900         -              Normal
  05/04/2026 04 PM PDT            4.04            862         -              Normal
  05/04/2026 05 PM PDT            4.01            848         -              Normal
  05/04/2026 06 PM PDT            4.01            848         0              Normal
  05/04/2026 07 PM PDT            3.99            839         -              Normal
  05/04/2026 08 PM PDT            3.98            834         -              Normal
  05/04/2026 09 PM PDT            3.98            834         0              Normal
  05/04/2026 10 PM PDT            3.99            839         +              Normal
  05/04/2026 11 PM PDT            3.98            834         -              Normal
  05/05/2026 12 AM PDT            3.98            834         0              Normal
  05/05/2026 01 AM PDT            4.04            862         +              Normal
  05/05/2026 02 AM PDT            4.12            900         +              Normal
  05/05/2026 03 AM PDT            4.16            919         +              Normal
  05/05/2026 04 AM PDT            4.14            910         -              Normal
  05/05/2026 05 AM PDT            4.10            891         -              Normal
  05/05/2026 06 AM PDT            4.07            876         -              Normal
  05/05/2026 07 AM PDT            4.08            881         +              Normal
  05/05/2026 08 AM PDT            4.07            876         -              Normal
  05/05/2026 09 AM PDT            4.07            876         0              Normal
  05/05/2026 10 AM PDT            4.08            881         +              Normal
  05/05/2026 11 AM PDT            4.10            891         +              Normal
  05/05/2026 12 PM PDT            4.11            895         +              Normal
  05/05/2026 01 PM PDT            4.07            876         -              Normal
  05/05/2026 02 PM PDT            4.08            881         +              Normal
  05/05/2026 03 PM PDT            4.12            900         +              Normal
  05/05/2026 04 PM PDT            4.15            915         +              Normal
  05/05/2026 05 PM PDT            4.14            910         -              Normal
  05/05/2026 06 PM PDT            4.12            900         -              Normal
  05/05/2026 07 PM PDT            4.07            876         -              Normal
  05/05/2026 08 PM PDT            4.08            881         +              Normal
  05/05/2026 09 PM PDT            4.04            862         -              Normal
  05/05/2026 10 PM PDT            3.97            830         -              Normal
  05/05/2026 11 PM PDT            3.96            825         -              Normal
  05/06/2026 12 AM PDT            3.94            816         -              Normal
  05/06/2026 01 AM PDT            3.91            802         -              Normal
  05/06/2026 02 AM PDT            3.91            802         0              Normal
  05/06/2026 03 AM PDT            3.89            793         -              Normal
  05/06/2026 04 AM PDT            3.88            789         -              Normal
  05/06/2026 05 AM PDT            3.88            789         0              Normal
  05/06/2026 06 AM PDT            3.87            784         -              Normal
  05/06/2026 07 AM PDT            3.87            784         0              Normal
  05/06/2026 08 AM PDT            3.76            736         -              Normal
  05/06/2026 09 AM PDT            3.66            693         -              Normal
  05/06/2026 10 AM PDT            3.74            727         +              Normal
  05/06/2026 11 AM PDT            3.76            736         +              Normal
  05/06/2026 12 PM PDT            3.78            745         +              Normal
  05/06/2026 01 PM PDT            3.81            758         +              Normal
  05/06/2026 02 PM PDT            3.86            780         +              Normal
  05/06/2026 03 PM PDT            3.87            784         +              Normal
  05/06/2026 04 PM PDT            3.88            789         +              Normal
  05/06/2026 05 PM PDT            3.89            793         +              Normal
  05/06/2026 06 PM PDT            3.89            793         0              Normal
  05/06/2026 07 PM PDT            3.87            784         -              Normal
  05/06/2026 08 PM PDT            3.83            766         -              Normal
  05/06/2026 09 PM PDT            3.80            753         -              Normal
  05/06/2026 10 PM PDT            3.79            749         -              Normal
  05/06/2026 11 PM PDT            3.81            758         +              Normal
  05/07/2026 12 AM PDT            3.82            762         +              Normal
  05/07/2026 01 AM PDT            3.84            771         +              Normal
  05/07/2026 02 AM PDT            3.84            771         0              Normal
  05/07/2026 03 AM PDT            3.84            771         0              Normal
  05/07/2026 04 AM PDT            3.82            762         -              Normal
  05/07/2026 05 AM PDT            3.82            762         0              Normal
  05/07/2026 06 AM PDT            3.85            775         +              Normal
  05/07/2026 07 AM PDT            3.88            789         +              Normal
  05/07/2026 08 AM PDT            3.89            793         +              Normal
  05/07/2026 09 AM PDT            3.93            811         +              Normal
  05/07/2026 10 AM PDT            3.99            839         +              Normal
  05/07/2026 11 AM PDT            4.03            857         +              Normal
  05/07/2026 12 PM PDT            4.06            872         +              Normal
  05/07/2026 01 PM PDT            4.09            886         +              Normal
  05/07/2026 02 PM PDT            4.10            891         +              Normal
  05/07/2026 03 PM PDT            4.11            895         +              Normal
  05/07/2026 04 PM PDT            4.10            891         -              Normal
  05/07/2026 05 PM PDT            4.10            891         0              Normal
  05/07/2026 06 PM PDT            4.08            881         -              Normal
  05/07/2026 07 PM PDT            4.07            876         -              Normal
  05/07/2026 08 PM PDT            4.03            857         -              Normal
  05/07/2026 09 PM PDT            4.06            872         +              Normal
  05/07/2026 10 PM PDT            4.09            886         +              Normal
  05/07/2026 11 PM PDT            4.10            891         +              Normal
  05/08/2026 12 AM PDT            4.11            895         +              Normal
  05/08/2026 01 AM PDT            4.09            886         -              Normal
  05/08/2026 02 AM PDT            4.07            876         -              Normal
  05/08/2026 03 AM PDT            4.07            876         0              Normal
  05/08/2026 04 AM PDT            4.06            872         -              Normal
  05/08/2026 05 AM PDT            4.05            867         -              Normal
  05/08/2026 06 AM PDT            4.06            872         +              Normal
  05/08/2026 07 AM PDT            4.05            867         -              Normal
  05/08/2026 08 AM PDT            4.06            872         +              Normal
  05/08/2026 09 AM PDT            4.11            895         +              Normal
  05/08/2026 10 AM PDT            4.14            910         +              Normal
  05/08/2026 11 AM PDT            4.18            929         +              Normal
  05/08/2026 12 PM PDT            4.20            939         +              Normal
  05/08/2026 01 PM PDT            4.21            944         +              Normal
  05/08/2026 02 PM PDT            4.24            959         +              Normal
  05/08/2026 03 PM PDT            4.23            954         -              Normal
  05/08/2026 04 PM PDT            4.20            939         -              Normal
  05/08/2026 05 PM PDT            4.20            939         0              Normal
  05/08/2026 06 PM PDT            4.19            934         -              Normal
  05/08/2026 07 PM PDT            4.17            924         -              Normal
  05/08/2026 08 PM PDT            4.12            900         -              Normal
  05/08/2026 09 PM PDT            4.13            905         +              Normal
  05/08/2026 10 PM PDT            4.10            891         -              Normal
  05/08/2026 11 PM PDT            4.09            886         -              Normal
  05/09/2026 12 AM PDT            4.09            886         0              Normal
  05/09/2026 01 AM PDT            4.08            881         -              Normal
  05/09/2026 02 AM PDT            4.09            886         +              Normal
  05/09/2026 03 AM PDT            4.08            881         -              Normal
  05/09/2026 04 AM PDT            4.06            872         -              Normal
  05/09/2026 05 AM PDT            4.02            853         -              Normal
  05/09/2026 06 AM PDT            3.98            834         -              Normal
  05/09/2026 07 AM PDT            3.95            820         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  05/09/2026 08 AM PDT            3.92            807                        Normal
  05/09/2026 09 AM PDT            3.91            802         -              Normal
  05/09/2026 10 AM PDT            3.91            802         0              Normal
  05/09/2026 11 AM PDT            3.92            807         +              Normal
  05/09/2026 12 PM PDT            3.94            816         +              Normal
  05/09/2026 01 PM PDT            3.97            830         +              Normal
  05/09/2026 02 PM PDT            3.99            839         +              Normal
  05/09/2026 03 PM PDT            4.00            843         +              Normal
  05/09/2026 04 PM PDT            4.02            853         +              Normal
  05/09/2026 05 PM PDT            4.03            857         +              Normal
  05/09/2026 06 PM PDT            4.02            853         -              Normal
  05/09/2026 07 PM PDT            4.02            853         0              Normal
  05/09/2026 08 PM PDT            4.01            848         -              Normal
  05/09/2026 09 PM PDT            4.01            848         0              Normal
  05/09/2026 10 PM PDT            4.00            843         -              Normal
  05/09/2026 11 PM PDT            3.99            839         -              Normal
  05/10/2026 12 AM PDT            3.98            834         -              Normal
  05/10/2026 01 AM PDT            3.98            834         0              Normal
  05/10/2026 02 AM PDT            3.97            830         -              Normal
  05/10/2026 03 AM PDT            3.96            825         -              Normal
  05/10/2026 04 AM PDT            3.96            825         0              Normal
  05/10/2026 05 AM PDT            3.95            820         -              Normal
  05/10/2026 06 AM PDT            3.95            820         0              Normal
  05/10/2026 07 AM PDT            3.94            816         -              Normal
  05/10/2026 08 AM PDT            3.94            816         0              Normal
  05/10/2026 09 AM PDT            3.94            816         0              Normal
  05/10/2026 10 AM PDT            3.94            816         0              Normal
  05/10/2026 11 AM PDT            3.94            816         0              Normal
  05/10/2026 12 PM PDT            3.94            816         0              Normal
  05/10/2026 01 PM PDT            3.94            816         0              Normal
  05/10/2026 02 PM PDT            3.95            820         +              Normal
  05/10/2026 03 PM PDT            3.95            820         0              Normal
  05/10/2026 04 PM PDT            3.96            825         +              Normal
  05/10/2026 05 PM PDT            3.96            825         0              Normal
  05/10/2026 06 PM PDT            3.97            830         +              Normal
  05/10/2026 07 PM PDT            3.97            830         0              Normal
  05/10/2026 08 PM PDT            3.97            830         0              Normal
  05/10/2026 09 PM PDT            3.97            830         0              Normal
  05/10/2026 10 PM PDT            3.97            830         0              Normal
  05/10/2026 11 PM PDT            3.96            825         -              Normal
  05/11/2026 12 AM PDT            3.96            825         0              Normal
  05/11/2026 01 AM PDT            3.95            820         -              Normal
  05/11/2026 02 AM PDT            3.94            816         -              Normal
  05/11/2026 03 AM PDT            3.93            811         -              Normal
  05/11/2026 04 AM PDT            3.93            811         0              Normal
  05/11/2026 05 AM PDT            3.92            807         -              Normal
  05/11/2026 06 AM PDT            3.92            807         0              Normal
  05/11/2026 07 AM PDT            3.91            802         -              Normal
  05/11/2026 08 AM PDT            3.91            802         0              Normal
  05/11/2026 09 AM PDT            3.90            798         -              Normal
  05/11/2026 10 AM PDT            3.90            798         0              Normal
  05/11/2026 11 AM PDT            3.90            798         0              Normal
  05/11/2026 12 PM PDT            3.90            798         0              Normal
  05/11/2026 01 PM PDT            3.91            802         +              Normal
  05/11/2026 02 PM PDT            3.91            802         0              Normal
  05/11/2026 03 PM PDT            3.92            807         +              Normal
  05/11/2026 04 PM PDT            3.92            807         0              Normal
  05/11/2026 05 PM PDT            3.93            811         +              Normal
  05/11/2026 06 PM PDT            3.94            816         +              Normal
  05/11/2026 07 PM PDT            3.94            816         0              Normal
  05/11/2026 08 PM PDT            3.94            816         0              Normal
  05/11/2026 09 PM PDT            3.94            816         0              Normal
  05/11/2026 10 PM PDT            3.93            811         -              Normal
  05/11/2026 11 PM PDT            3.93            811         0              Normal
  05/12/2026 12 AM PDT            3.92            807         -              Normal
  05/12/2026 01 AM PDT            3.92            807         0              Normal
  05/12/2026 02 AM PDT            3.91            802         -              Normal
  05/12/2026 03 AM PDT            3.90            798         -              Normal
  05/12/2026 04 AM PDT            3.89            793         -              Normal
  05/12/2026 05 AM PDT            3.89            793         0              Normal
  05/12/2026 06 AM PDT            3.88            789         -              Normal
  05/12/2026 07 AM PDT            3.88            789         0              Normal
  05/12/2026 08 AM PDT            3.87            784         -              Normal
  05/12/2026 09 AM PDT            3.87            784         0              Normal
  05/12/2026 10 AM PDT            3.87            784         0              Normal
  05/12/2026 11 AM PDT            3.87            784         0              Normal
  05/12/2026 12 PM PDT            3.87            784         0              Normal
  05/12/2026 01 PM PDT            3.87            784         0              Normal
  05/12/2026 02 PM PDT            3.87            784         0              Normal
  05/12/2026 03 PM PDT            3.88            789         +              Normal
  05/12/2026 04 PM PDT            3.88            789         0              Normal
  05/12/2026 05 PM PDT            3.89            793         +              Normal
  05/12/2026 06 PM PDT            3.89            793         0              Normal
  05/12/2026 07 PM PDT            3.90            798         +              Normal
  05/12/2026 08 PM PDT            3.90            798         0              Normal
  05/12/2026 09 PM PDT            3.89            793         -              Normal
  05/12/2026 10 PM PDT            3.89            793         0              Normal
  05/12/2026 11 PM PDT            3.89            793         0              Normal
  05/13/2026 12 AM PDT            3.88            789         -              Normal
  05/13/2026 01 AM PDT            3.88            789         0              Normal
  05/13/2026 02 AM PDT            3.87            784         -              Normal
  05/13/2026 03 AM PDT            3.86            780         -              Normal
  05/13/2026 04 AM PDT            3.85            775         -              Normal
  05/13/2026 05 AM PDT            3.85            775         0              Normal
  05/13/2026 06 AM PDT            3.84            771         -              Normal
  05/13/2026 07 AM PDT            3.84            771         0              Normal
  05/13/2026 08 AM PDT            3.83            766         -              Normal
  05/13/2026 09 AM PDT            3.83            766         0              Normal
  05/13/2026 10 AM PDT            3.83            766         0              Normal
  05/13/2026 11 AM PDT            3.83            766         0              Normal
  05/13/2026 12 PM PDT            3.83            766         0              Normal
  05/13/2026 01 PM PDT            3.83            766         0              Normal
  05/13/2026 02 PM PDT            3.83            766         0              Normal
  05/13/2026 03 PM PDT            3.84            771         +              Normal
  05/13/2026 04 PM PDT            3.84            771         0              Normal
  05/13/2026 05 PM PDT            3.85            775         +              Normal
  05/13/2026 06 PM PDT            3.85            775         0              Normal
  05/13/2026 07 PM PDT            3.85            775         0              Normal
  05/13/2026 08 PM PDT            3.85            775         0              Normal
  05/13/2026 09 PM PDT            3.85            775         0              Normal
  05/13/2026 10 PM PDT            3.84            771         -              Normal
  05/13/2026 11 PM PDT            3.84            771         0              Normal
  05/14/2026 12 AM PDT            3.83            766         -              Normal
  05/14/2026 01 AM PDT            3.83            766         0              Normal
  05/14/2026 02 AM PDT            3.82            762         -              Normal
  05/14/2026 03 AM PDT            3.81            758         -              Normal
  05/14/2026 04 AM PDT            3.81            758         0              Normal
  05/14/2026 05 AM PDT            3.80            753         -              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.