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TRUCKEE RIVER - BELOW DERBY DAM (TBDN2)
| Latitude: 39.58º N | Longitude: 119.44º W | Elevation: 4200 Feet | | Forecast Type: Unofficial Location |
| Location: Storey County in Nevada | Bulletin Group: Eastern Sierra | River Group: Eastern Sierra |
| Issuance Time: | May 08 2026 at 8:25 AM PDT | Next Issuance: | May 09 2026 at 9:00 AM PDT
| |
| Action/Monitor: 10.0 Feet | Minor Flood: 11.0 Feet | Moderate Flood: N/A | Major Flood: N/A |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Truckee River - Below Derby Dam (TBDN2)
#
# File Generation Time: 05/08/2026 at 08:26 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 05/03/2026 at 04:00 PM PDT
# Maximum Observed Stage: 4.23 Feet
# Maximum Observed Flow: 954 cfs
#
# Earliest Date & Time of Maximum Forecast: 05/08/2026 at 02:00 PM PDT
# Maximum Forecast Stage: 4.25 Feet
# Maximum Forecast Flow: 964 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
05/03/2026 08 AM PDT 4.06 872 Normal
05/03/2026 09 AM PDT 4.08 881 + Normal
05/03/2026 10 AM PDT 4.12 900 + Normal
05/03/2026 11 AM PDT 4.11 895 - Normal
05/03/2026 12 PM PDT 4.09 886 - Normal
05/03/2026 01 PM PDT 4.10 891 + Normal
05/03/2026 02 PM PDT 4.11 895 + Normal
05/03/2026 03 PM PDT 4.11 895 0 Normal
05/03/2026 04 PM PDT 4.23 954 + Normal
05/03/2026 05 PM PDT 4.17 924 - Normal
05/03/2026 06 PM PDT 4.16 919 - Normal
05/03/2026 07 PM PDT 4.16 919 0 Normal
05/03/2026 08 PM PDT 4.16 919 0 Normal
05/03/2026 09 PM PDT 4.15 915 - Normal
05/03/2026 10 PM PDT 4.15 915 0 Normal
05/03/2026 11 PM PDT 4.14 910 - Normal
05/04/2026 12 AM PDT 4.12 900 - Normal
05/04/2026 01 AM PDT 4.12 900 0 Normal
05/04/2026 02 AM PDT 4.14 910 + Normal
05/04/2026 03 AM PDT 4.13 905 - Normal
05/04/2026 04 AM PDT 4.13 905 0 Normal
05/04/2026 05 AM PDT 4.12 900 - Normal
05/04/2026 06 AM PDT 4.12 900 0 Normal
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
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
05/08/2026 09 AM PDT 4.09 886 Normal
05/08/2026 10 AM PDT 4.12 900 + Normal
05/08/2026 11 AM PDT 4.16 919 + Normal
05/08/2026 12 PM PDT 4.20 939 + Normal
05/08/2026 01 PM PDT 4.23 954 + Normal
05/08/2026 02 PM PDT 4.25 964 + Normal
05/08/2026 03 PM PDT 4.25 964 0 Normal
05/08/2026 04 PM PDT 4.25 964 0 Normal
05/08/2026 05 PM PDT 4.25 964 0 Normal
05/08/2026 06 PM PDT 4.24 959 - Normal
05/08/2026 07 PM PDT 4.23 954 - Normal
05/08/2026 08 PM PDT 4.22 949 - Normal
05/08/2026 09 PM PDT 4.22 949 0 Normal
05/08/2026 10 PM PDT 4.21 944 - Normal
05/08/2026 11 PM PDT 4.20 939 - Normal
05/09/2026 12 AM PDT 4.18 929 - Normal
05/09/2026 01 AM PDT 4.16 919 - Normal
05/09/2026 02 AM PDT 4.15 915 - Normal
05/09/2026 03 AM PDT 4.14 910 - Normal
05/09/2026 04 AM PDT 4.13 905 - Normal
05/09/2026 05 AM PDT 4.12 900 - Normal
05/09/2026 06 AM PDT 4.11 895 - Normal
05/09/2026 07 AM PDT 4.11 895 0 Normal
05/09/2026 08 AM PDT 4.10 891 - Normal
05/09/2026 09 AM PDT 4.10 891 0 Normal
05/09/2026 10 AM PDT 4.10 891 0 Normal
05/09/2026 11 AM PDT 4.10 891 0 Normal
05/09/2026 12 PM PDT 4.11 895 + Normal
05/09/2026 01 PM PDT 4.12 900 + Normal
05/09/2026 02 PM PDT 4.14 910 + Normal
05/09/2026 03 PM PDT 4.16 919 + Normal
05/09/2026 04 PM PDT 4.18 929 + Normal
05/09/2026 05 PM PDT 4.20 939 + Normal
05/09/2026 06 PM PDT 4.21 944 + Normal
05/09/2026 07 PM PDT 4.22 949 + Normal
05/09/2026 08 PM PDT 4.22 949 0 Normal
05/09/2026 09 PM PDT 4.22 949 0 Normal
05/09/2026 10 PM PDT 4.21 944 - Normal
05/09/2026 11 PM PDT 4.20 939 - Normal
05/10/2026 12 AM PDT 4.18 929 - Normal
05/10/2026 01 AM PDT 4.17 924 - Normal
05/10/2026 02 AM PDT 4.15 915 - Normal
05/10/2026 03 AM PDT 4.13 905 - Normal
05/10/2026 04 AM PDT 4.12 900 - Normal
05/10/2026 05 AM PDT 4.11 895 - Normal
05/10/2026 06 AM PDT 4.10 891 - Normal
05/10/2026 07 AM PDT 4.09 886 - Normal
05/10/2026 08 AM PDT 4.08 881 - Normal
05/10/2026 09 AM PDT 4.07 876 - Normal
05/10/2026 10 AM PDT 4.07 876 0 Normal
05/10/2026 11 AM PDT 4.07 876 0 Normal
05/10/2026 12 PM PDT 4.08 881 + Normal
05/10/2026 01 PM PDT 4.09 886 + Normal
05/10/2026 02 PM PDT 4.11 895 + Normal
05/10/2026 03 PM PDT 4.12 900 + Normal
05/10/2026 04 PM PDT 4.15 915 + Normal
05/10/2026 05 PM PDT 4.17 924 + Normal
05/10/2026 06 PM PDT 4.18 929 + Normal
05/10/2026 07 PM PDT 4.19 934 + Normal
05/10/2026 08 PM PDT 4.20 939 + Normal
05/10/2026 09 PM PDT 4.19 934 - Normal
05/10/2026 10 PM PDT 4.18 929 - Normal
05/10/2026 11 PM PDT 4.17 924 - Normal
05/11/2026 12 AM PDT 4.16 919 - Normal
05/11/2026 01 AM PDT 4.14 910 - Normal
05/11/2026 02 AM PDT 4.13 905 - Normal
05/11/2026 03 AM PDT 4.11 895 - Normal
05/11/2026 04 AM PDT 4.09 886 - Normal
05/11/2026 05 AM PDT 4.08 881 - Normal
05/11/2026 06 AM PDT 4.07 876 - Normal
05/11/2026 07 AM PDT 4.05 867 - Normal
05/11/2026 08 AM PDT 4.05 867 0 Normal
05/11/2026 09 AM PDT 4.04 862 - Normal
05/11/2026 10 AM PDT 4.04 862 0 Normal
05/11/2026 11 AM PDT 4.04 862 0 Normal
05/11/2026 12 PM PDT 4.04 862 0 Normal
05/11/2026 01 PM PDT 4.04 862 0 Normal
05/11/2026 02 PM PDT 4.05 867 + Normal
05/11/2026 03 PM PDT 4.06 872 + Normal
05/11/2026 04 PM PDT 4.07 876 + Normal
05/11/2026 05 PM PDT 4.07 876 0 Normal
05/11/2026 06 PM PDT 4.08 881 + Normal
05/11/2026 07 PM PDT 4.08 881 0 Normal
05/11/2026 08 PM PDT 4.08 881 0 Normal
05/11/2026 09 PM PDT 4.07 876 - Normal
05/11/2026 10 PM PDT 4.07 876 0 Normal
05/11/2026 11 PM PDT 4.06 872 - Normal
05/12/2026 12 AM PDT 4.05 867 - Normal
05/12/2026 01 AM PDT 4.05 867 0 Normal
05/12/2026 02 AM PDT 4.04 862 - Normal
05/12/2026 03 AM PDT 4.03 857 - Normal
05/12/2026 04 AM PDT 4.03 857 0 Normal
05/12/2026 05 AM PDT 4.02 853 - Normal
05/12/2026 06 AM PDT 4.01 848 - Normal
05/12/2026 07 AM PDT 4.01 848 0 Normal
05/12/2026 08 AM PDT 4.01 848 0 Normal
05/12/2026 09 AM PDT 4.01 848 0 Normal
05/12/2026 10 AM PDT 4.01 848 0 Normal
05/12/2026 11 AM PDT 4.01 848 0 Normal
05/12/2026 12 PM PDT 4.01 848 0 Normal
05/12/2026 01 PM PDT 4.02 853 + Normal
05/12/2026 02 PM PDT 4.02 853 0 Normal
05/12/2026 03 PM PDT 4.03 857 + Normal
05/12/2026 04 PM PDT 4.03 857 0 Normal
05/12/2026 05 PM PDT 4.04 862 + Normal
05/12/2026 06 PM PDT 4.04 862 0 Normal
05/12/2026 07 PM PDT 4.04 862 0 Normal
05/12/2026 08 PM PDT 4.04 862 0 Normal
05/12/2026 09 PM PDT 4.04 862 0 Normal
05/12/2026 10 PM PDT 4.03 857 - Normal
05/12/2026 11 PM PDT 4.03 857 0 Normal
05/13/2026 12 AM PDT 4.02 853 - Normal
05/13/2026 01 AM PDT 4.01 848 - Normal
05/13/2026 02 AM PDT 4.01 848 0 Normal
05/13/2026 03 AM PDT 4.00 843 - Normal
05/13/2026 04 AM PDT 3.99 839 - Normal
05/13/2026 05 AM PDT 3.99 839 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.
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