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WEST WALKER RIVER - BELOW LITTLE WALKER RIVER NEAR COLEVILLE (WWBC1)
| Latitude: 38.38º N | Longitude: 119.45º W | Elevation: 6591 Feet | | Forecast Type: Official Location |
| Location: Mono County in California | Bulletin Group: Eastern Sierra | River Group: Eastern Sierra |
| Issuance Time: | Apr 13 2026 at 8:40 AM PDT | Next Issuance: | Apr 13 2026 at 3:00 PM PDT
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| Action/Monitor: 5.5 Feet | Minor Flood: 6.0 Feet | Moderate Flood: 6.8 Feet | Major Flood: 7.3 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: West Walker River - Blo Ltl Walker Nr Coleville (WWBC1)
#
# File Generation Time: 04/13/2026 at 08:40 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/11/2026 at 01:00 AM PDT
# Maximum Observed Stage: 2.70 Feet
# Maximum Observed Flow: 465 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/13/2026 at 09:00 AM PDT
# Maximum Forecast Stage: 2.44 Feet
# Maximum Forecast Flow: 369 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/08/2026 08 AM PDT 2.58 419 Normal
04/08/2026 09 AM PDT 2.56 411 - Normal
04/08/2026 10 AM PDT 2.56 411 0 Normal
04/08/2026 11 AM PDT 2.56 411 0 Normal
04/08/2026 12 PM PDT 2.55 408 - Normal
04/08/2026 01 PM PDT 2.54 404 - Normal
04/08/2026 02 PM PDT 2.52 397 - Normal
04/08/2026 03 PM PDT 2.52 397 0 Normal
04/08/2026 04 PM PDT 2.51 393 - Normal
04/08/2026 05 PM PDT 2.51 393 0 Normal
04/08/2026 06 PM PDT 2.51 393 0 Normal
04/08/2026 07 PM PDT 2.53 401 + Normal
04/08/2026 08 PM PDT 2.55 408 + Normal
04/08/2026 09 PM PDT 2.58 419 + Normal
04/08/2026 10 PM PDT 2.61 430 + Normal
04/08/2026 11 PM PDT 2.63 438 + Normal
04/09/2026 12 AM PDT 2.64 441 + Normal
04/09/2026 01 AM PDT 2.65 445 + Normal
04/09/2026 02 AM PDT 2.65 445 0 Normal
04/09/2026 03 AM PDT 2.66 449 + Normal
04/09/2026 04 AM PDT 2.66 449 0 Normal
04/09/2026 05 AM PDT 2.67 453 + Normal
04/09/2026 06 AM PDT 2.66 449 - Normal
04/09/2026 07 AM PDT 2.65 445 - Normal
04/09/2026 08 AM PDT 2.65 445 0 Normal
04/09/2026 09 AM PDT 2.65 445 0 Normal
04/09/2026 10 AM PDT 2.64 441 - Normal
04/09/2026 11 AM PDT 2.63 438 - Normal
04/09/2026 12 PM PDT 2.62 434 - Normal
04/09/2026 01 PM PDT 2.61 430 - Normal
04/09/2026 02 PM PDT 2.60 426 - Normal
04/09/2026 03 PM PDT 2.60 426 0 Normal
04/09/2026 04 PM PDT 2.58 419 - Normal
04/09/2026 05 PM PDT 2.58 419 0 Normal
04/09/2026 06 PM PDT 2.58 419 0 Normal
04/09/2026 07 PM PDT 2.57 415 - Normal
04/09/2026 08 PM PDT 2.60 426 + Normal
04/09/2026 09 PM PDT 2.60 426 0 Normal
04/09/2026 10 PM PDT 2.63 438 + Normal
04/09/2026 11 PM PDT 2.64 441 + Normal
04/10/2026 12 AM PDT 2.65 445 + Normal
04/10/2026 01 AM PDT 2.65 445 0 Normal
04/10/2026 02 AM PDT 2.64 441 - Normal
04/10/2026 03 AM PDT 2.65 445 + Normal
04/10/2026 04 AM PDT 2.65 445 0 Normal
04/10/2026 05 AM PDT 2.64 441 - Normal
04/10/2026 06 AM PDT 2.65 445 + Normal
04/10/2026 07 AM PDT 2.64 441 - Normal
04/10/2026 08 AM PDT 2.65 445 + Normal
04/10/2026 09 AM PDT 2.64 441 - Normal
04/10/2026 10 AM PDT 2.64 441 0 Normal
04/10/2026 11 AM PDT 2.63 438 - Normal
04/10/2026 12 PM PDT 2.61 430 - Normal
04/10/2026 01 PM PDT 2.61 430 0 Normal
04/10/2026 02 PM PDT 2.60 426 - Normal
04/10/2026 03 PM PDT 2.60 426 0 Normal
04/10/2026 04 PM PDT 2.59 422 - Normal
04/10/2026 05 PM PDT 2.58 419 - Normal
04/10/2026 06 PM PDT 2.60 426 + Normal
04/10/2026 07 PM PDT 2.60 426 0 Normal
04/10/2026 08 PM PDT 2.62 434 + Normal
04/10/2026 09 PM PDT 2.63 438 + Normal
04/10/2026 10 PM PDT 2.64 441 + Normal
04/10/2026 11 PM PDT 2.66 449 + Normal
04/11/2026 12 AM PDT 2.68 457 + Normal
04/11/2026 01 AM PDT 2.70 465 + Normal
04/11/2026 02 AM PDT 2.69 461 - Normal
04/11/2026 03 AM PDT 2.69 461 0 Normal
04/11/2026 04 AM PDT 2.68 457 - Normal
04/11/2026 05 AM PDT 2.66 449 - Normal
04/11/2026 06 AM PDT 2.66 449 0 Normal
04/11/2026 07 AM PDT 2.65 445 - Normal
04/11/2026 08 AM PDT 2.63 438 - Normal
04/11/2026 09 AM PDT 2.61 430 - Normal
04/11/2026 10 AM PDT 2.60 426 - Normal
04/11/2026 11 AM PDT 2.60 426 0 Normal
04/11/2026 12 PM PDT 2.63 438 + Normal
04/11/2026 01 PM PDT 2.64 441 + Normal
04/11/2026 02 PM PDT 2.63 438 - Normal
04/11/2026 03 PM PDT 2.63 438 0 Normal
04/11/2026 04 PM PDT 2.65 445 + Normal
04/11/2026 05 PM PDT 2.66 449 + Normal
04/11/2026 06 PM PDT 2.66 449 0 Normal
04/11/2026 07 PM PDT 2.67 453 + Normal
04/11/2026 08 PM PDT 2.66 449 - Normal
04/11/2026 09 PM PDT 2.64 441 - Normal
04/11/2026 10 PM PDT 2.64 441 0 Normal
04/11/2026 11 PM PDT 2.62 434 - Normal
04/12/2026 12 AM PDT 2.64 441 + Normal
04/12/2026 01 AM PDT 2.65 445 + Normal
04/12/2026 02 AM PDT 2.65 445 0 Normal
04/12/2026 03 AM PDT 2.66 449 + Normal
04/12/2026 04 AM PDT 2.63 438 - Normal
04/12/2026 05 AM PDT 2.57 415 - Normal
04/12/2026 06 AM PDT 2.54 404 - Normal
04/12/2026 07 AM PDT 2.51 393 - Normal
04/12/2026 08 AM PDT 2.43 366 - Normal
04/12/2026 09 AM PDT 2.38 349 - Normal
04/12/2026 10 AM PDT 2.36 342 - Normal
04/12/2026 11 AM PDT 2.36 342 0 Normal
04/12/2026 12 PM PDT 2.36 342 0 Normal
04/12/2026 01 PM PDT 2.39 352 + Normal
04/12/2026 02 PM PDT 2.42 362 + Normal
04/12/2026 03 PM PDT 2.46 376 + Normal
04/12/2026 04 PM PDT 2.49 386 + Normal
04/12/2026 05 PM PDT 2.53 401 + Normal
04/12/2026 06 PM PDT 2.54 404 + Normal
04/12/2026 07 PM PDT 2.55 408 + Normal
04/12/2026 08 PM PDT 2.54 404 - Normal
04/12/2026 09 PM PDT 2.54 404 0 Normal
04/12/2026 10 PM PDT 2.53 401 - Normal
04/12/2026 11 PM PDT 2.52 397 - Normal
04/13/2026 12 AM PDT 2.52 397 0 Normal
04/13/2026 01 AM PDT 2.52 397 0 Normal
04/13/2026 02 AM PDT 2.49 386 - Normal
04/13/2026 03 AM PDT 2.47 379 - Normal
04/13/2026 04 AM PDT 2.47 379 0 Normal
04/13/2026 05 AM PDT 2.46 376 - Normal
04/13/2026 06 AM PDT 2.47 379 + Normal
04/13/2026 07 AM PDT 2.46 376 - Normal
04/13/2026 08 AM PDT 2.45 372 - Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/13/2026 09 AM PDT 2.44 369 Normal
04/13/2026 10 AM PDT 2.44 369 0 Normal
04/13/2026 11 AM PDT 2.43 366 - Normal
04/13/2026 12 PM PDT 2.42 362 - Normal
04/13/2026 01 PM PDT 2.41 359 - Normal
04/13/2026 02 PM PDT 2.41 359 0 Normal
04/13/2026 03 PM PDT 2.40 356 - Normal
04/13/2026 04 PM PDT 2.40 356 0 Normal
04/13/2026 05 PM PDT 2.40 356 0 Normal
04/13/2026 06 PM PDT 2.40 356 0 Normal
04/13/2026 07 PM PDT 2.40 356 0 Normal
04/13/2026 08 PM PDT 2.41 359 + Normal
04/13/2026 09 PM PDT 2.41 359 0 Normal
04/13/2026 10 PM PDT 2.41 359 0 Normal
04/13/2026 11 PM PDT 2.41 359 0 Normal
04/14/2026 12 AM PDT 2.41 359 0 Normal
04/14/2026 01 AM PDT 2.41 359 0 Normal
04/14/2026 02 AM PDT 2.41 359 0 Normal
04/14/2026 03 AM PDT 2.41 359 0 Normal
04/14/2026 04 AM PDT 2.41 359 0 Normal
04/14/2026 05 AM PDT 2.40 356 - Normal
04/14/2026 06 AM PDT 2.40 356 0 Normal
04/14/2026 07 AM PDT 2.39 352 - Normal
04/14/2026 08 AM PDT 2.38 349 - Normal
04/14/2026 09 AM PDT 2.37 346 - Normal
04/14/2026 10 AM PDT 2.36 342 - Normal
04/14/2026 11 AM PDT 2.35 339 - Normal
04/14/2026 12 PM PDT 2.34 336 - Normal
04/14/2026 01 PM PDT 2.34 336 0 Normal
04/14/2026 02 PM PDT 2.33 333 - Normal
04/14/2026 03 PM PDT 2.32 330 - Normal
04/14/2026 04 PM PDT 2.32 330 0 Normal
04/14/2026 05 PM PDT 2.31 326 - Normal
04/14/2026 06 PM PDT 2.32 330 + Normal
04/14/2026 07 PM PDT 2.33 333 + Normal
04/14/2026 08 PM PDT 2.33 333 0 Normal
04/14/2026 09 PM PDT 2.34 336 + Normal
04/14/2026 10 PM PDT 2.35 339 + Normal
04/14/2026 11 PM PDT 2.35 339 0 Normal
04/15/2026 12 AM PDT 2.35 339 0 Normal
04/15/2026 01 AM PDT 2.36 342 + Normal
04/15/2026 02 AM PDT 2.36 342 0 Normal
04/15/2026 03 AM PDT 2.36 342 0 Normal
04/15/2026 04 AM PDT 2.36 342 0 Normal
04/15/2026 05 AM PDT 2.36 342 0 Normal
04/15/2026 06 AM PDT 2.35 339 - Normal
04/15/2026 07 AM PDT 2.34 336 - Normal
04/15/2026 08 AM PDT 2.33 333 - Normal
04/15/2026 09 AM PDT 2.32 330 - Normal
04/15/2026 10 AM PDT 2.31 326 - Normal
04/15/2026 11 AM PDT 2.30 323 - Normal
04/15/2026 12 PM PDT 2.29 320 - Normal
04/15/2026 01 PM PDT 2.28 317 - Normal
04/15/2026 02 PM PDT 2.28 317 0 Normal
04/15/2026 03 PM PDT 2.27 314 - Normal
04/15/2026 04 PM PDT 2.27 314 0 Normal
04/15/2026 05 PM PDT 2.27 314 0 Normal
04/15/2026 06 PM PDT 2.27 314 0 Normal
04/15/2026 07 PM PDT 2.28 317 + Normal
04/15/2026 08 PM PDT 2.30 323 + Normal
04/15/2026 09 PM PDT 2.31 326 + Normal
04/15/2026 10 PM PDT 2.31 326 0 Normal
04/15/2026 11 PM PDT 2.32 330 + Normal
04/16/2026 12 AM PDT 2.32 330 0 Normal
04/16/2026 01 AM PDT 2.32 330 0 Normal
04/16/2026 02 AM PDT 2.32 330 0 Normal
04/16/2026 03 AM PDT 2.32 330 0 Normal
04/16/2026 04 AM PDT 2.32 330 0 Normal
04/16/2026 05 AM PDT 2.32 330 0 Normal
04/16/2026 06 AM PDT 2.31 326 - Normal
04/16/2026 07 AM PDT 2.30 323 - Normal
04/16/2026 08 AM PDT 2.29 320 - Normal
04/16/2026 09 AM PDT 2.28 317 - Normal
04/16/2026 10 AM PDT 2.27 314 - Normal
04/16/2026 11 AM PDT 2.26 311 - Normal
04/16/2026 12 PM PDT 2.25 308 - Normal
04/16/2026 01 PM PDT 2.24 305 - Normal
04/16/2026 02 PM PDT 2.23 302 - Normal
04/16/2026 03 PM PDT 2.22 299 - Normal
04/16/2026 04 PM PDT 2.21 296 - Normal
04/16/2026 05 PM PDT 2.21 296 0 Normal
04/16/2026 06 PM PDT 2.21 296 0 Normal
04/16/2026 07 PM PDT 2.21 296 0 Normal
04/16/2026 08 PM PDT 2.21 296 0 Normal
04/16/2026 09 PM PDT 2.21 296 0 Normal
04/16/2026 10 PM PDT 2.22 299 + Normal
04/16/2026 11 PM PDT 2.21 296 - Normal
04/17/2026 12 AM PDT 2.21 296 0 Normal
04/17/2026 01 AM PDT 2.21 296 0 Normal
04/17/2026 02 AM PDT 2.21 296 0 Normal
04/17/2026 03 AM PDT 2.20 293 - Normal
04/17/2026 04 AM PDT 2.20 293 0 Normal
04/17/2026 05 AM PDT 2.19 290 - Normal
04/17/2026 06 AM PDT 2.19 290 0 Normal
04/17/2026 07 AM PDT 2.18 287 - Normal
04/17/2026 08 AM PDT 2.17 284 - Normal
04/17/2026 09 AM PDT 2.16 281 - Normal
04/17/2026 10 AM PDT 2.15 278 - Normal
04/17/2026 11 AM PDT 2.14 276 - Normal
04/17/2026 12 PM PDT 2.13 273 - Normal
04/17/2026 01 PM PDT 2.13 273 0 Normal
04/17/2026 02 PM PDT 2.12 270 - Normal
04/17/2026 03 PM PDT 2.12 270 0 Normal
04/17/2026 04 PM PDT 2.11 267 - Normal
04/17/2026 05 PM PDT 2.11 267 0 Normal
04/17/2026 06 PM PDT 2.12 270 + Normal
04/17/2026 07 PM PDT 2.12 270 0 Normal
04/17/2026 08 PM PDT 2.13 273 + Normal
04/17/2026 09 PM PDT 2.14 276 + Normal
04/17/2026 10 PM PDT 2.15 278 + Normal
04/17/2026 11 PM PDT 2.15 278 0 Normal
04/18/2026 12 AM PDT 2.16 281 + Normal
04/18/2026 01 AM PDT 2.16 281 0 Normal
04/18/2026 02 AM PDT 2.17 284 + Normal
04/18/2026 03 AM PDT 2.17 284 0 Normal
04/18/2026 04 AM PDT 2.17 284 0 Normal
04/18/2026 05 AM PDT 2.17 284 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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