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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: | Sep 23 2026 at 7:07 AM PDT | Next Issuance: | Sep 24 2026 at 9:00 AM PDT
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| Action: 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: 09/23/2026 at 07:08 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 09/22/2026 at 05:00 AM PDT
# Maximum Observed Stage: 2.77 Feet
# Maximum Observed Flow: 310 cfs
#
# Earliest Date & Time of Maximum Forecast: 09/23/2026 at 12:00 PM PDT
# Maximum Forecast Stage: 2.62 Feet
# Maximum Forecast Flow: 267 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
09/18/2026 07 AM PDT 2.58 256 Normal
09/18/2026 08 AM PDT 2.60 261 + Normal
09/18/2026 09 AM PDT 2.60 261 0 Normal
09/18/2026 10 AM PDT 2.61 264 + Normal
09/18/2026 11 AM PDT 2.63 269 + Normal
09/18/2026 12 PM PDT 2.64 272 + Normal
09/18/2026 01 PM PDT 2.63 269 - Normal
09/18/2026 02 PM PDT 2.63 269 0 Normal
09/18/2026 03 PM PDT 2.62 267 - Normal
09/18/2026 04 PM PDT 2.64 272 + Normal
09/18/2026 05 PM PDT 2.60 261 - Normal
09/18/2026 06 PM PDT 2.64 272 + Normal
09/18/2026 07 PM PDT 2.62 267 - Normal
09/18/2026 08 PM PDT 2.63 269 + Normal
09/18/2026 09 PM PDT 2.64 272 + Normal
09/18/2026 10 PM PDT 2.64 272 0 Normal
09/18/2026 11 PM PDT 2.64 272 0 Normal
09/19/2026 12 AM PDT 2.64 272 0 Normal
09/19/2026 01 AM PDT 2.67 280 + Normal
09/19/2026 02 AM PDT 2.70 289 + Normal
09/19/2026 03 AM PDT 2.71 292 + Normal
09/19/2026 04 AM PDT 2.71 292 0 Normal
09/19/2026 05 AM PDT 2.73 298 + Normal
09/19/2026 06 AM PDT 2.72 295 - Normal
09/19/2026 07 AM PDT 2.72 295 0 Normal
09/19/2026 08 AM PDT 2.70 289 - Normal
09/19/2026 09 AM PDT 2.71 292 + Normal
09/19/2026 10 AM PDT 2.69 286 - Normal
09/19/2026 11 AM PDT 2.69 286 0 Normal
09/19/2026 12 PM PDT 2.70 289 + Normal
09/19/2026 01 PM PDT 2.73 298 + Normal
09/19/2026 02 PM PDT 2.71 292 - Normal
09/19/2026 03 PM PDT 2.74 301 + Normal
09/19/2026 04 PM PDT 2.75 304 + Normal
09/19/2026 05 PM PDT 2.74 301 - Normal
09/19/2026 06 PM PDT 2.73 298 - Normal
09/19/2026 07 PM PDT 2.72 295 - Normal
09/19/2026 08 PM PDT 2.72 295 0 Normal
09/19/2026 09 PM PDT 2.71 292 - Normal
09/19/2026 10 PM PDT 2.71 292 0 Normal
09/19/2026 11 PM PDT 2.71 292 0 Normal
09/20/2026 12 AM PDT 2.70 289 - Normal
09/20/2026 01 AM PDT 2.70 289 0 Normal
09/20/2026 02 AM PDT 2.71 292 + Normal
09/20/2026 03 AM PDT 2.70 289 - Normal
09/20/2026 04 AM PDT 2.70 289 0 Normal
09/20/2026 05 AM PDT 2.70 289 0 Normal
09/20/2026 06 AM PDT 2.70 289 0 Normal
09/20/2026 07 AM PDT 2.68 283 - Normal
09/20/2026 08 AM PDT 2.66 278 - Normal
09/20/2026 09 AM PDT 2.66 278 0 Normal
09/20/2026 10 AM PDT 2.66 278 0 Normal
09/20/2026 11 AM PDT 2.66 278 0 Normal
09/20/2026 12 PM PDT 2.64 272 - Normal
09/20/2026 01 PM PDT 2.62 267 - Normal
09/20/2026 02 PM PDT 2.63 269 + Normal
09/20/2026 03 PM PDT 2.64 272 + Normal
09/20/2026 04 PM PDT 2.66 278 + Normal
09/20/2026 05 PM PDT 2.66 278 0 Normal
09/20/2026 06 PM PDT 2.71 292 + Normal
09/20/2026 07 PM PDT 2.71 292 0 Normal
09/20/2026 08 PM PDT 2.67 280 - Normal
09/20/2026 09 PM PDT 2.66 278 - Normal
09/20/2026 10 PM PDT 2.66 278 0 Normal
09/20/2026 11 PM PDT 2.66 278 0 Normal
09/21/2026 12 AM PDT 2.67 280 + Normal
09/21/2026 01 AM PDT 2.71 292 + Normal
09/21/2026 02 AM PDT 2.71 292 0 Normal
09/21/2026 03 AM PDT 2.74 301 + Normal
09/21/2026 04 AM PDT 2.74 301 0 Normal
09/21/2026 05 AM PDT 2.74 301 0 Normal
09/21/2026 06 AM PDT 2.74 301 0 Normal
09/21/2026 07 AM PDT 2.75 304 + Normal
09/21/2026 08 AM PDT 2.74 301 - Normal
09/21/2026 09 AM PDT 2.75 304 + Normal
09/21/2026 10 AM PDT 2.74 301 - Normal
09/21/2026 11 AM PDT 2.74 301 0 Normal
09/21/2026 12 PM PDT 2.76 307 + Normal
09/21/2026 01 PM PDT 2.75 304 - Normal
09/21/2026 02 PM PDT 2.76 307 + Normal
09/21/2026 03 PM PDT 2.75 304 - Normal
09/21/2026 04 PM PDT 2.76 307 + Normal
09/21/2026 05 PM PDT 2.76 307 0 Normal
09/21/2026 06 PM PDT 2.76 307 0 Normal
09/21/2026 07 PM PDT 2.77 310 + Normal
09/21/2026 08 PM PDT 2.77 310 0 Normal
09/21/2026 09 PM PDT 2.75 304 - Normal
09/21/2026 10 PM PDT 2.72 295 - Normal
09/21/2026 11 PM PDT 2.72 295 0 Normal
09/22/2026 12 AM PDT 2.75 304 + Normal
09/22/2026 01 AM PDT 2.74 301 - Normal
09/22/2026 02 AM PDT 2.76 307 + Normal
09/22/2026 03 AM PDT 2.76 307 0 Normal
09/22/2026 04 AM PDT 2.76 307 0 Normal
09/22/2026 05 AM PDT 2.77 310 + Normal
09/22/2026 06 AM PDT 2.76 307 - Normal
09/22/2026 07 AM PDT 2.76 307 0 Normal
09/22/2026 08 AM PDT 2.74 301 - Normal
09/22/2026 09 AM PDT 2.73 298 - Normal
09/22/2026 10 AM PDT 2.74 301 + Normal
09/22/2026 11 AM PDT 2.73 298 - Normal
09/22/2026 12 PM PDT 2.69 286 - Normal
09/22/2026 01 PM PDT 2.69 286 0 Normal
09/22/2026 02 PM PDT 2.68 283 - Normal
09/22/2026 03 PM PDT 2.65 275 - Normal
09/22/2026 04 PM PDT 2.64 272 - Normal
09/22/2026 05 PM PDT 2.61 264 - Normal
09/22/2026 06 PM PDT 2.62 267 + Normal
09/22/2026 07 PM PDT 2.62 267 0 Normal
09/22/2026 08 PM PDT 2.63 269 + Normal
09/22/2026 09 PM PDT 2.63 269 0 Normal
09/22/2026 10 PM PDT 2.65 275 + Normal
09/22/2026 11 PM PDT 2.65 275 0 Normal
09/23/2026 12 AM PDT 2.63 269 - Normal
09/23/2026 01 AM PDT 2.62 267 - Normal
09/23/2026 02 AM PDT 2.66 278 + Normal
09/23/2026 03 AM PDT 2.66 278 0 Normal
09/23/2026 04 AM PDT 2.66 278 0 Normal
09/23/2026 05 AM PDT 2.65 275 - Normal
09/23/2026 06 AM PDT 2.62 267 - Normal
09/23/2026 07 AM PDT 2.62 267 0 Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
09/23/2026 08 AM PDT 2.61 264 Normal
09/23/2026 09 AM PDT 2.61 264 0 Normal
09/23/2026 10 AM PDT 2.61 264 0 Normal
09/23/2026 11 AM PDT 2.61 264 0 Normal
09/23/2026 12 PM PDT 2.62 267 + Normal
09/23/2026 01 PM PDT 2.61 264 - Normal
09/23/2026 02 PM PDT 2.61 264 0 Normal
09/23/2026 03 PM PDT 2.61 264 0 Normal
09/23/2026 04 PM PDT 2.61 264 0 Normal
09/23/2026 05 PM PDT 2.60 261 - Normal
09/23/2026 06 PM PDT 2.60 261 0 Normal
09/23/2026 07 PM PDT 2.60 261 0 Normal
09/23/2026 08 PM PDT 2.60 261 0 Normal
09/23/2026 09 PM PDT 2.59 258 - Normal
09/23/2026 10 PM PDT 2.58 256 - Normal
09/23/2026 11 PM PDT 2.58 256 0 Normal
09/24/2026 12 AM PDT 2.58 256 0 Normal
09/24/2026 01 AM PDT 2.58 256 0 Normal
09/24/2026 02 AM PDT 2.58 256 0 Normal
09/24/2026 03 AM PDT 2.58 256 0 Normal
09/24/2026 04 AM PDT 2.58 256 0 Normal
09/24/2026 05 AM PDT 2.58 256 0 Normal
09/24/2026 06 AM PDT 2.59 258 + Normal
09/24/2026 07 AM PDT 2.59 258 0 Normal
09/24/2026 08 AM PDT 2.59 258 0 Normal
09/24/2026 09 AM PDT 2.59 258 0 Normal
09/24/2026 10 AM PDT 2.58 256 - Normal
09/24/2026 11 AM PDT 2.58 256 0 Normal
09/24/2026 12 PM PDT 2.58 256 0 Normal
09/24/2026 01 PM PDT 2.58 256 0 Normal
09/24/2026 02 PM PDT 2.58 256 0 Normal
09/24/2026 03 PM PDT 2.58 256 0 Normal
09/24/2026 04 PM PDT 2.58 256 0 Normal
09/24/2026 05 PM PDT 2.58 256 0 Normal
09/24/2026 06 PM PDT 2.58 256 0 Normal
09/24/2026 07 PM PDT 2.58 256 0 Normal
09/24/2026 08 PM PDT 2.58 256 0 Normal
09/24/2026 09 PM PDT 2.58 256 0 Normal
09/24/2026 10 PM PDT 2.58 256 0 Normal
09/24/2026 11 PM PDT 2.58 256 0 Normal
09/25/2026 12 AM PDT 2.57 253 - Normal
09/25/2026 01 AM PDT 2.57 253 0 Normal
09/25/2026 02 AM PDT 2.57 253 0 Normal
09/25/2026 03 AM PDT 2.57 253 0 Normal
09/25/2026 04 AM PDT 2.58 256 + Normal
09/25/2026 05 AM PDT 2.58 256 0 Normal
09/25/2026 06 AM PDT 2.58 256 0 Normal
09/25/2026 07 AM PDT 2.59 258 + Normal
09/25/2026 08 AM PDT 2.59 258 0 Normal
09/25/2026 09 AM PDT 2.58 256 - Normal
09/25/2026 10 AM PDT 2.58 256 0 Normal
09/25/2026 11 AM PDT 2.58 256 0 Normal
09/25/2026 12 PM PDT 2.58 256 0 Normal
09/25/2026 01 PM PDT 2.58 256 0 Normal
09/25/2026 02 PM PDT 2.58 256 0 Normal
09/25/2026 03 PM PDT 2.58 256 0 Normal
09/25/2026 04 PM PDT 2.58 256 0 Normal
09/25/2026 05 PM PDT 2.58 256 0 Normal
09/25/2026 06 PM PDT 2.58 256 0 Normal
09/25/2026 07 PM PDT 2.58 256 0 Normal
09/25/2026 08 PM PDT 2.58 256 0 Normal
09/25/2026 09 PM PDT 2.58 256 0 Normal
09/25/2026 10 PM PDT 2.58 256 0 Normal
09/25/2026 11 PM PDT 2.58 256 0 Normal
09/26/2026 12 AM PDT 2.58 256 0 Normal
09/26/2026 01 AM PDT 2.58 256 0 Normal
09/26/2026 02 AM PDT 2.57 253 - Normal
09/26/2026 03 AM PDT 2.57 253 0 Normal
09/26/2026 04 AM PDT 2.58 256 + Normal
09/26/2026 05 AM PDT 2.58 256 0 Normal
09/26/2026 06 AM PDT 2.59 258 + Normal
09/26/2026 07 AM PDT 2.59 258 0 Normal
09/26/2026 08 AM PDT 2.59 258 0 Normal
09/26/2026 09 AM PDT 2.59 258 0 Normal
09/26/2026 10 AM PDT 2.59 258 0 Normal
09/26/2026 11 AM PDT 2.58 256 - Normal
09/26/2026 12 PM PDT 2.58 256 0 Normal
09/26/2026 01 PM PDT 2.58 256 0 Normal
09/26/2026 02 PM PDT 2.58 256 0 Normal
09/26/2026 03 PM PDT 2.58 256 0 Normal
09/26/2026 04 PM PDT 2.58 256 0 Normal
09/26/2026 05 PM PDT 2.58 256 0 Normal
09/26/2026 06 PM PDT 2.58 256 0 Normal
09/26/2026 07 PM PDT 2.58 256 0 Normal
09/26/2026 08 PM PDT 2.58 256 0 Normal
09/26/2026 09 PM PDT 2.58 256 0 Normal
09/26/2026 10 PM PDT 2.58 256 0 Normal
09/26/2026 11 PM PDT 2.58 256 0 Normal
09/27/2026 12 AM PDT 2.58 256 0 Normal
09/27/2026 01 AM PDT 2.58 256 0 Normal
09/27/2026 02 AM PDT 2.58 256 0 Normal
09/27/2026 03 AM PDT 2.57 253 - Normal
09/27/2026 04 AM PDT 2.58 256 + Normal
09/27/2026 05 AM PDT 2.58 256 0 Normal
09/27/2026 06 AM PDT 2.59 258 + Normal
09/27/2026 07 AM PDT 2.59 258 0 Normal
09/27/2026 08 AM PDT 2.59 258 0 Normal
09/27/2026 09 AM PDT 2.59 258 0 Normal
09/27/2026 10 AM PDT 2.59 258 0 Normal
09/27/2026 11 AM PDT 2.59 258 0 Normal
09/27/2026 12 PM PDT 2.58 256 - Normal
09/27/2026 01 PM PDT 2.58 256 0 Normal
09/27/2026 02 PM PDT 2.58 256 0 Normal
09/27/2026 03 PM PDT 2.58 256 0 Normal
09/27/2026 04 PM PDT 2.58 256 0 Normal
09/27/2026 05 PM PDT 2.58 256 0 Normal
09/27/2026 06 PM PDT 2.58 256 0 Normal
09/27/2026 07 PM PDT 2.58 256 0 Normal
09/27/2026 08 PM PDT 2.58 256 0 Normal
09/27/2026 09 PM PDT 2.58 256 0 Normal
09/27/2026 10 PM PDT 2.58 256 0 Normal
09/27/2026 11 PM PDT 2.58 256 0 Normal
09/28/2026 12 AM PDT 2.58 256 0 Normal
09/28/2026 01 AM PDT 2.58 256 0 Normal
09/28/2026 02 AM PDT 2.58 256 0 Normal
09/28/2026 03 AM PDT 2.58 256 0 Normal
09/28/2026 04 AM PDT 2.58 256 0 Normal
09/28/2026 05 AM PDT 2.59 258 + 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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