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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: | Apr 21 2026 at 7:26 AM PDT | Next Issuance: | Apr 22 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: 04/21/2026 at 07:29 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/16/2026 at 05:00 PM PDT
# Maximum Observed Stage: 4.21 Feet
# Maximum Observed Flow: 910 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/21/2026 at 06:00 PM PDT
# Maximum Forecast Stage: 4.20 Feet
# Maximum Forecast Flow: 905 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/16/2026 07 AM PDT 4.08 848 Normal
04/16/2026 08 AM PDT 4.07 843 - Normal
04/16/2026 09 AM PDT 4.11 862 + Normal
04/16/2026 10 AM PDT 4.14 876 + Normal
04/16/2026 11 AM PDT 4.16 886 + Normal
04/16/2026 12 PM PDT 4.17 891 + Normal
04/16/2026 01 PM PDT 4.20 905 + Normal
04/16/2026 02 PM PDT 4.20 905 0 Normal
04/16/2026 03 PM PDT 4.20 905 0 Normal
04/16/2026 04 PM PDT 4.21 910 + Normal
04/16/2026 05 PM PDT 4.21 910 0 Normal
04/16/2026 06 PM PDT 4.16 886 - Normal
04/16/2026 07 PM PDT 4.17 891 + Normal
04/16/2026 08 PM PDT 4.16 886 - Normal
04/16/2026 09 PM PDT 4.15 881 - Normal
04/16/2026 10 PM PDT 4.15 881 0 Normal
04/16/2026 11 PM PDT 4.12 867 - Normal
04/17/2026 12 AM PDT 4.11 862 - Normal
04/17/2026 01 AM PDT 4.11 862 0 Normal
04/17/2026 02 AM PDT 4.09 853 - Normal
04/17/2026 03 AM PDT 4.06 839 - Normal
04/17/2026 04 AM PDT 4.05 834 - Normal
04/17/2026 05 AM PDT 4.07 843 + Normal
04/17/2026 06 AM PDT 4.05 834 - Normal
04/17/2026 07 AM PDT 4.05 834 0 Normal
04/17/2026 08 AM PDT 4.06 839 + Normal
04/17/2026 09 AM PDT 4.07 843 + Normal
04/17/2026 10 AM PDT 4.08 848 + Normal
04/17/2026 11 AM PDT 4.08 848 0 Normal
04/17/2026 12 PM PDT 4.09 853 + Normal
04/17/2026 01 PM PDT 4.11 862 + Normal
04/17/2026 02 PM PDT 4.14 876 + Normal
04/17/2026 03 PM PDT 4.13 872 - Normal
04/17/2026 04 PM PDT 4.12 867 - Normal
04/17/2026 05 PM PDT 4.11 862 - Normal
04/17/2026 06 PM PDT 4.12 867 + Normal
04/17/2026 07 PM PDT 4.08 848 - Normal
04/17/2026 08 PM PDT 4.07 843 - Normal
04/17/2026 09 PM PDT 4.05 834 - Normal
04/17/2026 10 PM PDT 4.05 834 0 Normal
04/17/2026 11 PM PDT 4.05 834 0 Normal
04/18/2026 12 AM PDT 4.04 830 - Normal
04/18/2026 01 AM PDT 4.03 825 - Normal
04/18/2026 02 AM PDT 4.01 816 - Normal
04/18/2026 03 AM PDT 4.03 825 + Normal
04/18/2026 04 AM PDT 4.06 839 + Normal
04/18/2026 05 AM PDT 4.06 839 0 Normal
04/18/2026 06 AM PDT 4.06 839 0 Normal
04/18/2026 07 AM PDT 4.05 834 - Normal
04/18/2026 08 AM PDT 4.05 834 0 Normal
04/18/2026 09 AM PDT 4.06 839 + Normal
04/18/2026 10 AM PDT 4.05 834 - Normal
04/18/2026 11 AM PDT 4.04 830 - Normal
04/18/2026 12 PM PDT 4.04 830 0 Normal
04/18/2026 01 PM PDT 4.07 843 + Normal
04/18/2026 02 PM PDT 4.08 848 + Normal
04/18/2026 03 PM PDT 4.07 843 - Normal
04/18/2026 04 PM PDT 4.07 843 0 Normal
04/18/2026 05 PM PDT 4.08 848 + Normal
04/18/2026 06 PM PDT 4.08 848 0 Normal
04/18/2026 07 PM PDT 4.07 843 - Normal
04/18/2026 08 PM PDT 4.06 839 - Normal
04/18/2026 09 PM PDT 4.03 825 - Normal
04/18/2026 10 PM PDT 4.05 834 + Normal
04/18/2026 11 PM PDT 4.05 834 0 Normal
04/19/2026 12 AM PDT 4.02 820 - Normal
04/19/2026 01 AM PDT 4.03 825 + Normal
04/19/2026 02 AM PDT 4.03 825 0 Normal
04/19/2026 03 AM PDT 4.02 820 - Normal
04/19/2026 04 AM PDT 4.01 816 - Normal
04/19/2026 05 AM PDT 4.01 816 0 Normal
04/19/2026 06 AM PDT 3.99 807 - Normal
04/19/2026 07 AM PDT 3.99 807 0 Normal
04/19/2026 08 AM PDT 4.02 820 + Normal
04/19/2026 09 AM PDT 4.02 820 0 Normal
04/19/2026 10 AM PDT 4.04 830 + Normal
04/19/2026 11 AM PDT 4.06 839 + Normal
04/19/2026 12 PM PDT 4.09 853 + Normal
04/19/2026 01 PM PDT 4.11 862 + Normal
04/19/2026 02 PM PDT 4.14 876 + Normal
04/19/2026 03 PM PDT 4.14 876 0 Normal
04/19/2026 04 PM PDT 4.13 872 - Normal
04/19/2026 05 PM PDT 4.11 862 - Normal
04/19/2026 06 PM PDT 4.10 857 - Normal
04/19/2026 07 PM PDT 4.12 867 + Normal
04/19/2026 08 PM PDT 4.11 862 - Normal
04/19/2026 09 PM PDT 4.09 853 - Normal
04/19/2026 10 PM PDT 4.07 843 - Normal
04/19/2026 11 PM PDT 4.04 830 - Normal
04/20/2026 12 AM PDT 4.01 816 - Normal
04/20/2026 01 AM PDT 4.01 816 0 Normal
04/20/2026 02 AM PDT 4.00 811 - Normal
04/20/2026 03 AM PDT 3.99 807 - Normal
04/20/2026 04 AM PDT 3.99 807 0 Normal
04/20/2026 05 AM PDT 4.00 811 + Normal
04/20/2026 06 AM PDT 4.00 811 0 Normal
04/20/2026 07 AM PDT 3.99 807 - Normal
04/20/2026 08 AM PDT 4.00 811 + Normal
04/20/2026 09 AM PDT 3.96 793 - Normal
04/20/2026 10 AM PDT 3.95 789 - Normal
04/20/2026 11 AM PDT 3.99 807 + Normal
04/20/2026 12 PM PDT 3.96 793 - Normal
04/20/2026 01 PM PDT 3.97 798 + Normal
04/20/2026 02 PM PDT 4.02 820 + Normal
04/20/2026 03 PM PDT 4.04 830 + Normal
04/20/2026 04 PM PDT 4.01 816 - Normal
04/20/2026 05 PM PDT 4.04 830 + Normal
04/20/2026 06 PM PDT 4.02 820 - Normal
04/20/2026 07 PM PDT 4.02 820 0 Normal
04/20/2026 08 PM PDT 4.00 811 - Normal
04/20/2026 09 PM PDT 3.99 807 - Normal
04/20/2026 10 PM PDT 3.98 802 - Normal
04/20/2026 11 PM PDT 3.96 793 - Normal
04/21/2026 12 AM PDT 3.94 784 - Normal
04/21/2026 01 AM PDT 3.94 784 0 Normal
04/21/2026 02 AM PDT 3.93 780 - Normal
04/21/2026 03 AM PDT 3.95 789 + Normal
04/21/2026 04 AM PDT 3.97 798 + Normal
04/21/2026 05 AM PDT 4.02 820 + Normal
04/21/2026 06 AM PDT 4.02 820 0 Normal
04/21/2026 07 AM PDT 4.03 825 + Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/21/2026 08 AM PDT 4.04 830 Normal
04/21/2026 09 AM PDT 4.05 834 + Normal
04/21/2026 10 AM PDT 4.07 843 + Normal
04/21/2026 11 AM PDT 4.08 848 + Normal
04/21/2026 12 PM PDT 4.10 857 + Normal
04/21/2026 01 PM PDT 4.11 862 + Normal
04/21/2026 02 PM PDT 4.13 872 + Normal
04/21/2026 03 PM PDT 4.15 881 + Normal
04/21/2026 04 PM PDT 4.17 891 + Normal
04/21/2026 05 PM PDT 4.19 900 + Normal
04/21/2026 06 PM PDT 4.20 905 + Normal
04/21/2026 07 PM PDT 4.20 905 0 Normal
04/21/2026 08 PM PDT 4.20 905 0 Normal
04/21/2026 09 PM PDT 4.18 895 - Normal
04/21/2026 10 PM PDT 4.17 891 - Normal
04/21/2026 11 PM PDT 4.15 881 - Normal
04/22/2026 12 AM PDT 4.15 881 0 Normal
04/22/2026 01 AM PDT 4.14 876 - Normal
04/22/2026 02 AM PDT 4.13 872 - Normal
04/22/2026 03 AM PDT 4.11 862 - Normal
04/22/2026 04 AM PDT 4.10 857 - Normal
04/22/2026 05 AM PDT 4.09 853 - Normal
04/22/2026 06 AM PDT 4.08 848 - Normal
04/22/2026 07 AM PDT 4.08 848 0 Normal
04/22/2026 08 AM PDT 4.08 848 0 Normal
04/22/2026 09 AM PDT 4.08 848 0 Normal
04/22/2026 10 AM PDT 4.07 843 - Normal
04/22/2026 11 AM PDT 4.06 839 - Normal
04/22/2026 12 PM PDT 4.05 834 - Normal
04/22/2026 01 PM PDT 4.04 830 - Normal
04/22/2026 02 PM PDT 4.03 825 - Normal
04/22/2026 03 PM PDT 4.02 820 - Normal
04/22/2026 04 PM PDT 4.01 816 - Normal
04/22/2026 05 PM PDT 4.01 816 0 Normal
04/22/2026 06 PM PDT 4.00 811 - Normal
04/22/2026 07 PM PDT 3.99 807 - Normal
04/22/2026 08 PM PDT 3.98 802 - Normal
04/22/2026 09 PM PDT 3.97 798 - Normal
04/22/2026 10 PM PDT 3.95 789 - Normal
04/22/2026 11 PM PDT 3.94 784 - Normal
04/23/2026 12 AM PDT 3.92 775 - Normal
04/23/2026 01 AM PDT 3.91 771 - Normal
04/23/2026 02 AM PDT 3.90 766 - Normal
04/23/2026 03 AM PDT 3.88 758 - Normal
04/23/2026 04 AM PDT 3.87 753 - Normal
04/23/2026 05 AM PDT 3.86 749 - Normal
04/23/2026 06 AM PDT 3.85 745 - Normal
04/23/2026 07 AM PDT 3.84 740 - Normal
04/23/2026 08 AM PDT 3.84 740 0 Normal
04/23/2026 09 AM PDT 3.83 736 - Normal
04/23/2026 10 AM PDT 3.82 732 - Normal
04/23/2026 11 AM PDT 3.81 727 - Normal
04/23/2026 12 PM PDT 3.81 727 0 Normal
04/23/2026 01 PM PDT 3.80 723 - Normal
04/23/2026 02 PM PDT 3.79 719 - Normal
04/23/2026 03 PM PDT 3.79 719 0 Normal
04/23/2026 04 PM PDT 3.78 714 - Normal
04/23/2026 05 PM PDT 3.78 714 0 Normal
04/23/2026 06 PM PDT 3.77 710 - Normal
04/23/2026 07 PM PDT 3.76 706 - Normal
04/23/2026 08 PM PDT 3.76 706 0 Normal
04/23/2026 09 PM PDT 3.75 702 - Normal
04/23/2026 10 PM PDT 3.75 702 0 Normal
04/23/2026 11 PM PDT 3.74 698 - Normal
04/24/2026 12 AM PDT 3.73 693 - Normal
04/24/2026 01 AM PDT 3.72 689 - Normal
04/24/2026 02 AM PDT 3.72 689 0 Normal
04/24/2026 03 AM PDT 3.71 685 - Normal
04/24/2026 04 AM PDT 3.70 681 - Normal
04/24/2026 05 AM PDT 3.70 681 0 Normal
04/24/2026 06 AM PDT 3.71 685 + Normal
04/24/2026 07 AM PDT 3.71 685 0 Normal
04/24/2026 08 AM PDT 3.72 689 + Normal
04/24/2026 09 AM PDT 3.73 693 + Normal
04/24/2026 10 AM PDT 3.74 698 + Normal
04/24/2026 11 AM PDT 3.75 702 + Normal
04/24/2026 12 PM PDT 3.77 710 + Normal
04/24/2026 01 PM PDT 3.79 719 + Normal
04/24/2026 02 PM PDT 3.81 727 + Normal
04/24/2026 03 PM PDT 3.83 736 + Normal
04/24/2026 04 PM PDT 3.84 740 + Normal
04/24/2026 05 PM PDT 3.84 740 0 Normal
04/24/2026 06 PM PDT 3.84 740 0 Normal
04/24/2026 07 PM PDT 3.83 736 - Normal
04/24/2026 08 PM PDT 3.83 736 0 Normal
04/24/2026 09 PM PDT 3.83 736 0 Normal
04/24/2026 10 PM PDT 3.83 736 0 Normal
04/24/2026 11 PM PDT 3.82 732 - Normal
04/25/2026 12 AM PDT 3.81 727 - Normal
04/25/2026 01 AM PDT 3.81 727 0 Normal
04/25/2026 02 AM PDT 3.80 723 - Normal
04/25/2026 03 AM PDT 3.79 719 - Normal
04/25/2026 04 AM PDT 3.79 719 0 Normal
04/25/2026 05 AM PDT 3.79 719 0 Normal
04/25/2026 06 AM PDT 3.79 719 0 Normal
04/25/2026 07 AM PDT 3.79 719 0 Normal
04/25/2026 08 AM PDT 3.79 719 0 Normal
04/25/2026 09 AM PDT 3.79 719 0 Normal
04/25/2026 10 AM PDT 3.79 719 0 Normal
04/25/2026 11 AM PDT 3.81 727 + Normal
04/25/2026 12 PM PDT 3.82 732 + Normal
04/25/2026 01 PM PDT 3.84 740 + Normal
04/25/2026 02 PM PDT 3.86 749 + Normal
04/25/2026 03 PM PDT 3.88 758 + Normal
04/25/2026 04 PM PDT 3.89 762 + Normal
04/25/2026 05 PM PDT 3.90 766 + Normal
04/25/2026 06 PM PDT 3.91 771 + Normal
04/25/2026 07 PM PDT 3.91 771 0 Normal
04/25/2026 08 PM PDT 3.92 775 + Normal
04/25/2026 09 PM PDT 3.92 775 0 Normal
04/25/2026 10 PM PDT 3.93 780 + Normal
04/25/2026 11 PM PDT 3.92 775 - Normal
04/26/2026 12 AM PDT 3.92 775 0 Normal
04/26/2026 01 AM PDT 3.90 766 - Normal
04/26/2026 02 AM PDT 3.89 762 - Normal
04/26/2026 03 AM PDT 3.88 758 - Normal
04/26/2026 04 AM PDT 3.87 753 - Normal
04/26/2026 05 AM PDT 3.86 749 - 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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