CNRFC - Hydrology - River Guidance - Tabular Data

Location:

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KLAMATHRUSNAPSOUTHBAYSALINASSOCALSANDIEGOUPRSACLWRSACFTHRYUBAAMERICANCAPUTAHTULARESANJOAQNSANJOAQESIERRAHUMBOLDT = window.location.search; = new URLSearchParams(queryString); = window.location.href.split('?')[0] + "?" + urlParams.toString(); class="head">MERCED RIVER - YOSEMITE NP AT HAPPY ISLES (HPIC1)
Latitude: 37.73º N Longitude: 119.56º W Elevation: 4017 Feet Forecast Type: Official Location
Location: Mariposa County in California Bulletin Group: San Joaquin River Group: San Joaquin
Issuance Time: May 16 2026 at 8:07 AM PDT Next Issuance: May 17 2026 at 9:00 AM PDT width="16%">
Action/Monitor: N/A Minor Flood: 7.5 Feet Moderate Flood: 10.0 Feet Major Flood: 13.27 Feet

# Tabular Observed and Forecast Hydrograph Information River - Yosemite NP at Happy Isles (HPIC1) 05/16/2026 at 08:07 AM PDT Date & Time of Maximum Observed: 05/13/2026 at 05:00 AM PDT 5.58 Feet 1836 cfs & Time of Maximum Forecast: 05/17/2026 at 02:00 AM PDT 4.96 Feet 1370 cfs Stage (Feet) Flow (cfs) Trend Observed Status ------------------------------------------------------------- 5.35 1654 Normal 5.32 1631 - Normal 5.28 1601 - Normal 5.24 1571 - Normal 5.16 1512 - Normal 5.08 1454 - Normal 5.04 1426 - Normal 4.98 1384 - Normal 4.92 1343 - Normal 4.85 1295 - Normal 4.84 1289 - Normal 4.90 1329 + Normal 4.99 1391 + Normal 5.10 1469 + Normal 5.22 1556 + Normal 5.30 1616 + Normal 5.40 1693 + Normal 5.44 1724 + Normal 5.47 1748 + Normal 5.49 1764 + Normal 5.44 1724 - Normal 5.51 1780 + Normal 5.48 1756 - Normal 5.44 1724 - Normal 5.41 1701 - Normal 5.36 1662 - Normal 5.32 1631 - Normal 5.30 1616 - Normal 5.23 1564 - Normal 5.20 1542 - Normal 5.12 1483 - Normal 5.05 1433 - Normal 5.02 1412 - Normal 4.93 1350 - Normal 4.94 1356 + Normal 4.93 1350 - Normal 5.02 1412 + Normal 5.09 1462 + Normal 5.21 1549 + Normal 5.31 1624 + Normal 5.40 1693 + Normal 5.44 1724 + Normal 5.49 1764 + Normal 5.48 1756 - Normal 5.54 1804 + Normal 5.58 1836 + Normal 5.55 1812 - Normal 5.54 1804 - Normal 5.54 1804 0 Normal 5.51 1780 - Normal 5.45 1732 - Normal 5.41 1701 - Normal 5.37 1670 - Normal 5.26 1586 - Normal 5.23 1564 - Normal 5.19 1534 - Normal 5.05 1433 - Normal 4.99 1391 - Normal 5.00 1398 + Normal 4.97 1377 - Normal 5.00 1398 + Normal 5.08 1454 + Normal 5.16 1512 + Normal 5.21 1549 + Normal 5.23 1564 + Normal 5.27 1594 + Normal 5.31 1624 + Normal 5.27 1594 - Normal 5.28 1601 + Normal 5.32 1631 + Normal 5.29 1609 - Normal 5.28 1601 - Normal 5.24 1571 - Normal 5.18 1527 - Normal 5.13 1490 - Normal 5.12 1483 - Normal 5.09 1462 - Normal 5.03 1419 - Normal 4.94 1356 - Normal 4.91 1336 - Normal 4.85 1295 - Normal 4.79 1256 - Normal 4.73 1216 - Normal 4.74 1223 + Normal 4.80 1262 + Normal 4.82 1275 + Normal 4.89 1322 + Normal 4.97 1377 + Normal 5.07 1447 + Normal 5.11 1476 + Normal 5.12 1483 + Normal 5.15 1505 + Normal 5.14 1498 - Normal 5.19 1534 + Normal 5.17 1520 - Normal 5.16 1512 - Normal 5.15 1505 - Normal 5.15 1505 0 Normal 5.15 1505 0 Normal 5.06 1440 - Normal 5.05 1433 - Normal 4.99 1391 - Normal 4.93 1350 - Normal 4.86 1302 - Normal 4.85 1295 - Normal 4.79 1256 - Normal 4.72 1210 - Normal 4.72 1210 0 Normal 4.67 1178 - Normal 4.72 1210 + Normal 4.77 1242 + Normal 4.78 1249 + Normal 4.87 1309 + Normal 4.87 1309 0 Normal 4.94 1356 + Normal 4.93 1350 - Normal 4.91 1336 - Normal 4.94 1356 + Normal 4.91 1336 - Normal 4.88 1316 - Normal Stage (Feet) Flow (cfs) Trend Forecast Status ------------------------------------------------------------- 4.84 1289 Normal 4.80 1262 - Normal 4.78 1249 - Normal 4.73 1216 - Normal 4.70 1197 - Normal 4.65 1165 - Normal 4.62 1146 - Normal 4.59 1127 - Normal 4.56 1108 - Normal 4.59 1127 + Normal 4.64 1159 + Normal 4.70 1197 + Normal 4.77 1242 + Normal 4.82 1275 + Normal 4.88 1316 + Normal 4.91 1336 + Normal 4.93 1350 + Normal 4.95 1363 + Normal 4.96 1370 + Normal 4.96 1370 0 Normal 4.96 1370 0 Normal 4.96 1370 0 Normal 4.93 1350 - Normal 4.89 1322 - Normal 4.85 1295 - Normal 4.81 1269 - Normal 4.78 1249 - Normal 4.73 1216 - Normal 4.70 1197 - Normal 4.64 1159 - Normal 4.61 1140 - Normal 4.58 1121 - Normal 4.55 1102 - Normal 4.58 1121 + Normal 4.62 1146 + Normal 4.66 1171 + Normal 4.71 1204 + Normal 4.75 1229 + Normal 4.79 1256 + Normal 4.81 1269 + Normal 4.81 1269 0 Normal 4.81 1269 0 Normal 4.81 1269 0 Normal 4.79 1256 - Normal 4.78 1249 - Normal 4.76 1236 - Normal 4.71 1204 - Normal 4.66 1171 - Normal 4.60 1133 - Normal 4.55 1102 - Normal 4.50 1071 - Normal 4.44 1035 - Normal 4.40 1011 - Normal 4.35 982 - Normal 4.31 959 - Normal 4.27 936 - Normal 4.24 919 - Normal 4.25 925 + Normal 4.27 936 + Normal 4.30 953 + Normal 4.34 976 + Normal 4.37 994 + Normal 4.40 1011 + Normal 4.41 1017 + Normal 4.43 1029 + Normal 4.46 1047 + Normal 4.49 1065 + Normal 4.51 1077 + Normal 4.52 1084 + Normal 4.54 1096 + Normal 4.52 1084 - Normal 4.50 1071 - Normal 4.47 1053 - Normal 4.45 1041 - Normal 4.43 1029 - Normal 4.40 1011 - Normal 4.38 1000 - Normal 4.35 982 - Normal 4.33 970 - Normal 4.31 959 - Normal 4.29 948 - Normal 4.32 965 + Normal 4.37 994 + Normal 4.41 1017 + Normal 4.48 1059 + Normal 4.53 1090 + Normal 4.59 1127 + Normal 4.62 1146 + Normal 4.64 1159 + Normal 4.67 1178 + Normal 4.69 1191 + Normal 4.70 1197 + Normal 4.70 1197 0 Normal 4.71 1204 + Normal 4.69 1191 - Normal 4.66 1171 - Normal 4.63 1152 - Normal 4.60 1133 - Normal 4.58 1121 - Normal 4.54 1096 - Normal 4.51 1077 - Normal 4.47 1053 - Normal 4.46 1047 - Normal 4.43 1029 - Normal 4.42 1023 - Normal 4.46 1047 + Normal 4.52 1084 + Normal 4.57 1115 + Normal 4.65 1165 + Normal 4.71 1204 + Normal 4.78 1249 + Normal 4.82 1275 + Normal 4.85 1295 + Normal 4.87 1309 + Normal 4.89 1322 + Normal 4.91 1336 + Normal 4.91 1336 0 Normal 4.90 1329 - Normal 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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