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SAN JOAQUIN RIVER - VERNALIS (VNSC1)
| Latitude: 37.68º N | Longitude: 121.27º W | Elevation: 35 Feet | | Forecast Type: Official Location |
| Location: San Joaquin County in California | Bulletin Group: San Joaquin | River Group: San Joaquin |
| Issuance Time: | Apr 19 2026 at 8:47 AM PDT | Next Issuance: | Apr 20 2026 at 9:00 AM PDT
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| Action/Monitor: 24.5 Feet | Minor Flood: 29.0 Feet | Moderate Flood: 32.0 Feet | Major Flood: 37.3 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Joaquin River - Vernalis (VNSC1)
#
# File Generation Time: 04/19/2026 at 08:48 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 04/14/2026 at 08:00 AM PDT
# Maximum Observed Stage: 10.11 Feet
# Maximum Observed Flow: 2459 cfs
#
# Earliest Date & Time of Maximum Forecast: 04/20/2026 at 01:00 PM PDT
# Maximum Forecast Stage: 10.34 Feet
# Maximum Forecast Flow: 2645 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
04/14/2026 08 AM PDT 10.11 2459 Normal
04/14/2026 09 AM PDT 10.10 2451 - Normal
04/14/2026 10 AM PDT 10.08 2436 - Normal
04/14/2026 11 AM PDT 10.07 2428 - Normal
04/14/2026 12 PM PDT 10.06 2420 - Normal
04/14/2026 01 PM PDT 10.05 2412 - Normal
04/14/2026 02 PM PDT 10.02 2388 - Normal
04/14/2026 03 PM PDT 10.00 2373 - Normal
04/14/2026 04 PM PDT 9.98 2357 - Normal
04/14/2026 05 PM PDT 9.96 2341 - Normal
04/14/2026 06 PM PDT 9.93 2318 - Normal
04/14/2026 07 PM PDT 9.93 2318 0 Normal
04/14/2026 08 PM PDT 9.94 2326 + Normal
04/14/2026 09 PM PDT 9.94 2326 0 Normal
04/14/2026 10 PM PDT 9.92 2310 - Normal
04/14/2026 11 PM PDT 9.90 2295 - Normal
04/15/2026 12 AM PDT 9.89 2287 - Normal
04/15/2026 01 AM PDT 9.89 2287 0 Normal
04/15/2026 02 AM PDT 9.88 2279 - Normal
04/15/2026 03 AM PDT 9.87 2272 - Normal
04/15/2026 04 AM PDT 9.87 2272 0 Normal
04/15/2026 05 AM PDT 9.86 2264 - Normal
04/15/2026 06 AM PDT 9.85 2256 - Normal
04/15/2026 07 AM PDT 9.85 2256 0 Normal
04/15/2026 08 AM PDT 9.85 2256 0 Normal
04/15/2026 09 AM PDT 9.84 2249 - Normal
04/15/2026 10 AM PDT 9.85 2256 + Normal
04/15/2026 11 AM PDT 9.84 2249 - Normal
04/15/2026 12 PM PDT 9.87 2272 + Normal
04/15/2026 01 PM PDT 9.89 2287 + Normal
04/15/2026 02 PM PDT 9.89 2287 0 Normal
04/15/2026 03 PM PDT 9.91 2302 + Normal
04/15/2026 04 PM PDT 9.89 2287 - Normal
04/15/2026 05 PM PDT 9.91 2302 + Normal
04/15/2026 06 PM PDT 9.91 2302 0 Normal
04/15/2026 07 PM PDT 9.94 2326 + Normal
04/15/2026 08 PM PDT 9.96 2341 + Normal
04/15/2026 09 PM PDT 9.98 2357 + Normal
04/15/2026 10 PM PDT 10.00 2373 + Normal
04/15/2026 11 PM PDT 10.00 2373 0 Normal
04/16/2026 12 AM PDT 10.00 2373 0 Normal
04/16/2026 01 AM PDT 10.00 2373 0 Normal
04/16/2026 02 AM PDT 10.01 2380 + Normal
04/16/2026 03 AM PDT 10.01 2380 0 Normal
04/16/2026 04 AM PDT 10.01 2380 0 Normal
04/16/2026 05 AM PDT 9.99 2365 - Normal
04/16/2026 06 AM PDT 9.98 2357 - Normal
04/16/2026 07 AM PDT 9.97 2349 - Normal
04/16/2026 08 AM PDT 9.95 2333 - Normal
04/16/2026 09 AM PDT 9.93 2318 - Normal
04/16/2026 10 AM PDT 9.93 2318 0 Normal
04/16/2026 11 AM PDT 9.92 2310 - Normal
04/16/2026 12 PM PDT 9.89 2287 - Normal
04/16/2026 01 PM PDT 9.87 2272 - Normal
04/16/2026 02 PM PDT 9.85 2256 - Normal
04/16/2026 03 PM PDT 9.84 2249 - Normal
04/16/2026 04 PM PDT 9.82 2233 - Normal
04/16/2026 05 PM PDT 9.79 2210 - Normal
04/16/2026 06 PM PDT 9.77 2195 - Normal
04/16/2026 07 PM PDT 9.75 2180 - Normal
04/16/2026 08 PM PDT 9.75 2180 0 Normal
04/16/2026 09 PM PDT 9.72 2158 - Normal
04/16/2026 10 PM PDT 9.72 2158 0 Normal
04/16/2026 11 PM PDT 9.71 2150 - Normal
04/17/2026 12 AM PDT 9.70 2143 - Normal
04/17/2026 01 AM PDT 9.68 2128 - Normal
04/17/2026 02 AM PDT 9.68 2128 0 Normal
04/17/2026 03 AM PDT 9.66 2113 - Normal
04/17/2026 04 AM PDT 9.67 2120 + Normal
04/17/2026 05 AM PDT 9.66 2113 - Normal
04/17/2026 06 AM PDT 9.67 2120 + Normal
04/17/2026 07 AM PDT 9.66 2113 - Normal
04/17/2026 08 AM PDT 9.65 2105 - Normal
04/17/2026 09 AM PDT 9.63 2090 - Normal
04/17/2026 10 AM PDT 9.62 2083 - Normal
04/17/2026 11 AM PDT 9.61 2076 - Normal
04/17/2026 12 PM PDT 9.61 2076 0 Normal
04/17/2026 01 PM PDT 9.60 2068 - Normal
04/17/2026 02 PM PDT 9.58 2053 - Normal
04/17/2026 03 PM PDT 9.57 2046 - Normal
04/17/2026 04 PM PDT 9.56 2039 - Normal
04/17/2026 05 PM PDT 9.56 2039 0 Normal
04/17/2026 06 PM PDT 9.54 2024 - Normal
04/17/2026 07 PM PDT 9.56 2039 + Normal
04/17/2026 08 PM PDT 9.56 2039 0 Normal
04/17/2026 09 PM PDT 9.56 2039 0 Normal
04/17/2026 10 PM PDT 9.55 2031 - Normal
04/17/2026 11 PM PDT 9.55 2031 0 Normal
04/18/2026 12 AM PDT 9.56 2039 + Normal
04/18/2026 01 AM PDT 9.56 2039 0 Normal
04/18/2026 02 AM PDT 9.56 2039 0 Normal
04/18/2026 03 AM PDT 9.57 2046 + Normal
04/18/2026 04 AM PDT 9.57 2046 0 Normal
04/18/2026 05 AM PDT 9.58 2053 + Normal
04/18/2026 06 AM PDT 9.59 2061 + Normal
04/18/2026 07 AM PDT 9.60 2068 + Normal
04/18/2026 08 AM PDT 9.60 2068 0 Normal
04/18/2026 09 AM PDT 9.61 2076 + Normal
04/18/2026 10 AM PDT 9.63 2090 + Normal
04/18/2026 11 AM PDT 9.66 2113 + Normal
04/18/2026 12 PM PDT 9.68 2128 + Normal
04/18/2026 01 PM PDT 9.69 2135 + Normal
04/18/2026 02 PM PDT 9.72 2158 + Normal
04/18/2026 03 PM PDT 9.74 2173 + Normal
04/18/2026 04 PM PDT 9.73 2165 - Normal
04/18/2026 05 PM PDT 9.78 2203 + Normal
04/18/2026 06 PM PDT 9.80 2218 + Normal
04/18/2026 07 PM PDT 9.83 2241 + Normal
04/18/2026 08 PM PDT 9.85 2256 + Normal
04/18/2026 09 PM PDT 9.87 2272 + Normal
04/18/2026 10 PM PDT 9.90 2295 + Normal
04/18/2026 11 PM PDT 9.92 2310 + Normal
04/19/2026 12 AM PDT 9.94 2326 + Normal
04/19/2026 01 AM PDT 9.96 2341 + Normal
04/19/2026 02 AM PDT 9.98 2357 + Normal
04/19/2026 03 AM PDT 10.00 2373 + Normal
04/19/2026 04 AM PDT 10.01 2380 + Normal
04/19/2026 05 AM PDT 10.03 2396 + Normal
04/19/2026 06 AM PDT 10.05 2412 + Normal
04/19/2026 07 AM PDT 10.06 2420 + Normal
04/19/2026 08 AM PDT 10.08 2436 + Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
04/19/2026 09 AM PDT 10.10 2451 Normal
04/19/2026 10 AM PDT 10.11 2459 + Normal
04/19/2026 11 AM PDT 10.13 2475 + Normal
04/19/2026 12 PM PDT 10.14 2483 + Normal
04/19/2026 01 PM PDT 10.16 2499 + Normal
04/19/2026 02 PM PDT 10.17 2507 + Normal
04/19/2026 03 PM PDT 10.19 2523 + Normal
04/19/2026 04 PM PDT 10.20 2531 + Normal
04/19/2026 05 PM PDT 10.21 2539 + Normal
04/19/2026 06 PM PDT 10.23 2556 + Normal
04/19/2026 07 PM PDT 10.24 2564 + Normal
04/19/2026 08 PM PDT 10.25 2572 + Normal
04/19/2026 09 PM PDT 10.26 2580 + Normal
04/19/2026 10 PM PDT 10.27 2588 + Normal
04/19/2026 11 PM PDT 10.28 2596 + Normal
04/20/2026 12 AM PDT 10.29 2604 + Normal
04/20/2026 01 AM PDT 10.30 2612 + Normal
04/20/2026 02 AM PDT 10.30 2612 0 Normal
04/20/2026 03 AM PDT 10.31 2621 + Normal
04/20/2026 04 AM PDT 10.31 2621 0 Normal
04/20/2026 05 AM PDT 10.32 2629 + Normal
04/20/2026 06 AM PDT 10.32 2629 0 Normal
04/20/2026 07 AM PDT 10.32 2629 0 Normal
04/20/2026 08 AM PDT 10.33 2637 + Normal
04/20/2026 09 AM PDT 10.33 2637 0 Normal
04/20/2026 10 AM PDT 10.33 2637 0 Normal
04/20/2026 11 AM PDT 10.33 2637 0 Normal
04/20/2026 12 PM PDT 10.33 2637 0 Normal
04/20/2026 01 PM PDT 10.34 2645 + Normal
04/20/2026 02 PM PDT 10.34 2645 0 Normal
04/20/2026 03 PM PDT 10.34 2645 0 Normal
04/20/2026 04 PM PDT 10.34 2645 0 Normal
04/20/2026 05 PM PDT 10.34 2645 0 Normal
04/20/2026 06 PM PDT 10.34 2645 0 Normal
04/20/2026 07 PM PDT 10.34 2645 0 Normal
04/20/2026 08 PM PDT 10.34 2645 0 Normal
04/20/2026 09 PM PDT 10.34 2645 0 Normal
04/20/2026 10 PM PDT 10.34 2645 0 Normal
04/20/2026 11 PM PDT 10.34 2645 0 Normal
04/21/2026 12 AM PDT 10.33 2637 - Normal
04/21/2026 01 AM PDT 10.33 2637 0 Normal
04/21/2026 02 AM PDT 10.33 2637 0 Normal
04/21/2026 03 AM PDT 10.32 2629 - Normal
04/21/2026 04 AM PDT 10.32 2629 0 Normal
04/21/2026 05 AM PDT 10.32 2629 0 Normal
04/21/2026 06 AM PDT 10.31 2621 - Normal
04/21/2026 07 AM PDT 10.31 2621 0 Normal
04/21/2026 08 AM PDT 10.31 2621 0 Normal
04/21/2026 09 AM PDT 10.31 2621 0 Normal
04/21/2026 10 AM PDT 10.30 2612 - Normal
04/21/2026 11 AM PDT 10.30 2612 0 Normal
04/21/2026 12 PM PDT 10.30 2612 0 Normal
04/21/2026 01 PM PDT 10.29 2604 - Normal
04/21/2026 02 PM PDT 10.29 2604 0 Normal
04/21/2026 03 PM PDT 10.29 2604 0 Normal
04/21/2026 04 PM PDT 10.29 2604 0 Normal
04/21/2026 05 PM PDT 10.29 2604 0 Normal
04/21/2026 06 PM PDT 10.29 2604 0 Normal
04/21/2026 07 PM PDT 10.28 2596 - Normal
04/21/2026 08 PM PDT 10.28 2596 0 Normal
04/21/2026 09 PM PDT 10.28 2596 0 Normal
04/21/2026 10 PM PDT 10.28 2596 0 Normal
04/21/2026 11 PM PDT 10.27 2588 - Normal
04/22/2026 12 AM PDT 10.27 2588 0 Normal
04/22/2026 01 AM PDT 10.26 2580 - Normal
04/22/2026 02 AM PDT 10.26 2580 0 Normal
04/22/2026 03 AM PDT 10.26 2580 0 Normal
04/22/2026 04 AM PDT 10.25 2572 - Normal
04/22/2026 05 AM PDT 10.24 2564 - Normal
04/22/2026 06 AM PDT 10.24 2564 0 Normal
04/22/2026 07 AM PDT 10.24 2564 0 Normal
04/22/2026 08 AM PDT 10.23 2556 - Normal
04/22/2026 09 AM PDT 10.23 2556 0 Normal
04/22/2026 10 AM PDT 10.22 2547 - Normal
04/22/2026 11 AM PDT 10.22 2547 0 Normal
04/22/2026 12 PM PDT 10.22 2547 0 Normal
04/22/2026 01 PM PDT 10.22 2547 0 Normal
04/22/2026 02 PM PDT 10.21 2539 - Normal
04/22/2026 03 PM PDT 10.21 2539 0 Normal
04/22/2026 04 PM PDT 10.21 2539 0 Normal
04/22/2026 05 PM PDT 10.21 2539 0 Normal
04/22/2026 06 PM PDT 10.21 2539 0 Normal
04/22/2026 07 PM PDT 10.21 2539 0 Normal
04/22/2026 08 PM PDT 10.21 2539 0 Normal
04/22/2026 09 PM PDT 10.22 2547 + Normal
04/22/2026 10 PM PDT 10.22 2547 0 Normal
04/22/2026 11 PM PDT 10.22 2547 0 Normal
04/23/2026 12 AM PDT 10.23 2556 + Normal
04/23/2026 01 AM PDT 10.23 2556 0 Normal
04/23/2026 02 AM PDT 10.23 2556 0 Normal
04/23/2026 03 AM PDT 10.24 2564 + Normal
04/23/2026 04 AM PDT 10.24 2564 0 Normal
04/23/2026 05 AM PDT 10.24 2564 0 Normal
04/23/2026 06 AM PDT 10.24 2564 0 Normal
04/23/2026 07 AM PDT 10.23 2556 - Normal
04/23/2026 08 AM PDT 10.23 2556 0 Normal
04/23/2026 09 AM PDT 10.23 2556 0 Normal
04/23/2026 10 AM PDT 10.22 2547 - Normal
04/23/2026 11 AM PDT 10.21 2539 - Normal
04/23/2026 12 PM PDT 10.21 2539 0 Normal
04/23/2026 01 PM PDT 10.20 2531 - Normal
04/23/2026 02 PM PDT 10.19 2523 - Normal
04/23/2026 03 PM PDT 10.18 2515 - Normal
04/23/2026 04 PM PDT 10.18 2515 0 Normal
04/23/2026 05 PM PDT 10.16 2499 - Normal
04/23/2026 06 PM PDT 10.16 2499 0 Normal
04/23/2026 07 PM PDT 10.15 2491 - Normal
04/23/2026 08 PM PDT 10.14 2483 - Normal
04/23/2026 09 PM PDT 10.13 2475 - Normal
04/23/2026 10 PM PDT 10.12 2467 - Normal
04/23/2026 11 PM PDT 10.12 2467 0 Normal
04/24/2026 12 AM PDT 10.12 2467 0 Normal
04/24/2026 01 AM PDT 10.12 2467 0 Normal
04/24/2026 02 AM PDT 10.12 2467 0 Normal
04/24/2026 03 AM PDT 10.12 2467 0 Normal
04/24/2026 04 AM PDT 10.12 2467 0 Normal
04/24/2026 05 AM PDT 10.12 2467 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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