CNRFC - Hydrology - River Guidance - Tabular Data

Location:

# NOTE 1: # NOTE 2: # NOTE 3: # NOTE 4:

KLAMATHRUSNAPSOUTHBAYSALINASSOCALSANDIEGOUPRSACLWRSACFTHRYUBAAMERICANCAPUTAHTULARESANJOAQNSANJOAQESIERRAHUMBOLDT = window.location.search; = new URLSearchParams(queryString); = window.location.href.split('?')[0] + "?" + urlParams.toString(); class="head">MIDDLE FORK COSUMNES RIVER - SOMERSET (SOSC1)
Latitude: 38.62º N Longitude: 120.70º W Elevation: 1821 Feet
Location: El Dorado County in California Bulletin Group: San Joaquin River Group: North San Joaquin
Issuance Time: Dec 29 2025 at 7:47 AM PST Next Issuance: Dec 29 2025 at 3:00 PM PST width="16%">
Action/Monitor: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A

# Tabular Observed and Forecast Hydrograph Information Fork Cosumnes River - Somerset (SOSC1) 12/29/2025 at 07:49 AM PST Date & Time of Maximum Observed: 12/24/2025 at 07:00 PM PST 9.09 Feet 1674 cfs & Time of Maximum Forecast: 01/03/2026 at 04:00 AM PST 7.24 Feet 694 cfs Stage (Feet) Flow (cfs) Trend Observed Status ------------------------------------------------------------- 5.06 125 Not Applicable 5.16 140 + Not Applicable 5.32 165 + Not Applicable 5.48 193 + Not Applicable 5.76 248 + Not Applicable 6.08 323 + Not Applicable 6.73 510 + Not Applicable 7.61 849 + Not Applicable 8.33 1209 + Not Applicable 8.95 1581 + Not Applicable 9.09 1674 + Not Applicable 9.06 1654 - Not Applicable 9.09 1674 + Not Applicable 9.05 1647 - Not Applicable 8.99 1607 - Not Applicable 8.97 1594 - Not Applicable 8.85 1517 - Not Applicable 8.49 1299 - Not Applicable 8.22 1149 - Not Applicable 7.96 1014 - Not Applicable 7.84 956 - Not Applicable 7.64 863 - Not Applicable 7.59 841 - Not Applicable 7.48 792 - Not Applicable 7.37 747 - Not Applicable 7.29 714 - Not Applicable 7.26 702 - Not Applicable 7.31 722 + Not Applicable 7.30 718 - Not Applicable 7.34 734 + Not Applicable 7.37 747 + Not Applicable 7.40 759 + Not Applicable 7.27 706 - Not Applicable 7.21 682 - Not Applicable 7.14 655 - Not Applicable 7.08 632 - Not Applicable 7.04 618 - Not Applicable 6.98 596 - Not Applicable 6.96 588 - Not Applicable 7.01 607 + Not Applicable 6.94 581 - Not Applicable 7.02 610 + Not Applicable 7.16 663 + Not Applicable 7.20 678 + Not Applicable 7.25 698 + Not Applicable 7.35 738 + Not Applicable 7.52 810 + Not Applicable 7.78 927 + Not Applicable 7.87 970 + Not Applicable 7.83 951 - Not Applicable 7.95 1009 + Not Applicable 7.77 923 - Not Applicable 7.61 849 - Not Applicable 7.56 827 - Not Applicable 7.39 755 - Not Applicable 7.35 738 - Not Applicable 7.26 702 - Not Applicable 7.20 678 - Not Applicable 7.18 670 - Not Applicable 7.10 640 - Not Applicable 7.05 621 - Not Applicable 7.00 603 - Not Applicable 6.97 592 - Not Applicable 6.94 581 - Not Applicable 6.93 578 - Not Applicable 6.85 550 - Not Applicable 6.83 543 - Not Applicable 6.75 516 - Not Applicable 6.76 520 + Not Applicable 6.71 503 - Not Applicable 6.66 487 - Not Applicable 6.66 487 0 Not Applicable 6.64 481 - Not Applicable 6.58 462 - Not Applicable 6.56 455 - Not Applicable 6.51 440 - Not Applicable 6.48 431 - Not Applicable 6.45 422 - Not Applicable 6.41 411 - Not Applicable 6.38 402 - Not Applicable 6.36 397 - Not Applicable 6.32 385 - Not Applicable 6.30 380 - Not Applicable 6.25 366 - Not Applicable 6.25 366 0 Not Applicable 6.22 358 - Not Applicable 6.19 350 - Not Applicable 6.17 345 - Not Applicable 6.16 343 - Not Applicable 6.17 345 + Not Applicable 6.11 330 - Not Applicable 6.10 328 - Not Applicable 6.08 323 - Not Applicable 6.05 315 - Not Applicable 6.03 310 - Not Applicable 6.05 315 + Not Applicable 6.01 305 - Not Applicable 5.97 296 - Not Applicable 5.96 294 - Not Applicable 5.96 294 0 Not Applicable 5.93 287 - Not Applicable 5.92 284 - Not Applicable 5.91 282 - Not Applicable 5.89 278 - Not Applicable 5.87 273 - Not Applicable 5.84 266 - Not Applicable 5.85 268 + Not Applicable 5.79 255 - Not Applicable 5.82 261 + Not Applicable 5.81 259 - Not Applicable 5.78 253 - Not Applicable 5.82 261 + Not Applicable 5.76 248 - Not Applicable 5.76 248 0 Not Applicable 5.73 242 - Not Applicable 5.74 244 + Not Applicable 5.70 236 - Not Applicable 5.70 236 0 Not Applicable 5.68 232 - Not Applicable 5.68 232 0 Not Applicable 5.67 230 - Not Applicable Stage (Feet) Flow (cfs) Trend Forecast Status ------------------------------------------------------------- 5.67 230 Not Applicable 5.67 230 0 Not Applicable 5.67 230 0 Not Applicable 5.67 230 0 Not Applicable 5.67 230 0 Not Applicable 5.67 230 0 Not Applicable 5.66 228 - Not Applicable 5.66 228 0 Not Applicable 5.66 228 0 Not Applicable 5.66 228 0 Not Applicable 5.66 228 0 Not Applicable 5.66 228 0 Not Applicable 5.66 228 0 Not Applicable 5.66 228 0 Not Applicable 5.66 228 0 Not Applicable 5.66 228 0 Not Applicable 5.66 228 0 Not Applicable 5.66 228 0 Not Applicable 5.67 230 + Not Applicable 5.67 230 0 Not Applicable 5.67 230 0 Not Applicable 5.67 230 0 Not Applicable 5.68 232 + Not Applicable 5.68 232 0 Not Applicable 5.68 232 0 Not Applicable 5.69 234 + Not Applicable 5.69 234 0 Not Applicable 5.69 234 0 Not Applicable 5.69 234 0 Not Applicable 5.70 236 + Not Applicable 5.70 236 0 Not Applicable 5.70 236 0 Not Applicable 5.71 238 + Not Applicable 5.71 238 0 Not Applicable 5.71 238 0 Not Applicable 5.71 238 0 Not Applicable 5.72 240 + Not Applicable 5.72 240 0 Not Applicable 5.72 240 0 Not Applicable 5.73 242 + Not Applicable 5.73 242 0 Not Applicable 5.74 244 + Not Applicable 5.74 244 0 Not Applicable 5.75 246 + Not Applicable 5.75 246 0 Not Applicable 5.76 248 + Not Applicable 5.75 246 - Not Applicable 5.75 246 0 Not Applicable 5.75 246 0 Not Applicable 5.74 244 - Not Applicable 5.74 244 0 Not Applicable 5.73 242 - Not Applicable 5.73 242 0 Not Applicable 5.72 240 - Not Applicable 5.72 240 0 Not Applicable 5.72 240 0 Not Applicable 5.71 238 - Not Applicable 5.71 238 0 Not Applicable 5.71 238 0 Not Applicable 5.71 238 0 Not Applicable 5.71 238 0 Not Applicable 5.72 240 + Not Applicable 5.74 244 + Not Applicable 5.76 248 + Not Applicable 5.79 255 + Not Applicable 5.81 259 + Not Applicable 5.84 266 + Not Applicable 5.87 273 + Not Applicable 5.91 282 + Not Applicable 5.97 296 + Not Applicable 6.02 308 + Not Applicable 6.07 320 + Not Applicable 6.11 330 + Not Applicable 6.16 343 + Not Applicable 6.22 358 + Not Applicable 6.29 377 + Not Applicable 6.36 397 + Not Applicable 6.48 431 + Not Applicable 6.57 459 + Not Applicable 6.61 471 + Not Applicable 6.65 484 + Not Applicable 6.67 490 + Not Applicable 6.70 500 + Not Applicable 6.71 503 + Not Applicable 6.73 510 + Not Applicable 6.74 513 + Not Applicable 6.75 516 + Not Applicable 6.76 520 + Not Applicable 6.78 526 + Not Applicable 6.79 530 + Not Applicable 6.79 530 0 Not Applicable 6.80 533 + Not Applicable 6.81 536 + Not Applicable 6.81 536 0 Not Applicable 6.82 540 + Not Applicable 6.83 543 + Not Applicable 6.83 543 0 Not Applicable 6.83 543 0 Not Applicable 6.84 546 + Not Applicable 6.85 550 + Not Applicable 6.86 553 + Not Applicable 6.86 553 0 Not Applicable 6.87 557 + Not Applicable 6.88 560 + Not Applicable 6.89 564 + Not Applicable 6.91 571 + Not Applicable 6.93 578 + Not Applicable 6.95 585 + Not Applicable 6.96 588 + Not Applicable 6.98 596 + Not Applicable 7.02 610 + Not Applicable 7.07 629 + Not Applicable 7.12 647 + Not Applicable 7.15 659 + Not Applicable 7.18 670 + Not Applicable 7.21 682 + Not Applicable 7.24 694 + Not Applicable Stages are rounded to the nearest hundredth (.01) of a foot. Flows are rounded to the nearest (1) cfs. Trends are determined using hourly change in unrounded stage and flow. Maximum Values are determined using unrounded stage and flow. End Web Content -->
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