Sacramento River Annual Flow Reconstruction --------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program --------------------------------------------------------------------- NOTE: PLEASE CITE ORIGINAL REFERENCES WHEN USING THIS DATA!!!!! CONTRIBUTOR: Dave Meko, University of Arizona NAME OF DATA SET: Sacramento River Annual Flow Reconstruction IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2001-081. SUGGESTED DATA CITATION: Meko, D.M., et al., 2001, Sacramento River Annual Flow Reconstruction. International Tree-Ring Data Bank. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series #2001-081. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Meko, D.M., M. D. Therrell, C. H. Baisan, and M. K. Hughes, 2001, Sacramento River Flow Reconstructed to A.D. 869 From Tree Rings, Journal of the American Water Resources Association, v.37, No.4, August 2001. LAST UPDATE: 11/2001 (Original receipt by WDC-A Paleo) GEOGRAPHIC REGION: California, USA. PERIOD OF RECORD: 869-1977 AD DESCRIPTION: Meko et al. 2001 Sacramento River Annual Flow Reconstruction. Reconstruction of total annual flow, in millions of acre/feet, of the Sacramento River, based on tree ring chronologies. Note: Two reconstructions of Sacramento River annual streamflow by David Meko and colleagues are archived at the World Data Center for Paleoclimatology. Because they are very similar and were published in the same year (2001), this text clarifies the relationship between the two reconstructions. In the late 1990s, Meko and colleagues generated a new reconstruction of streamflow for the Sacramento River, extending from AD 869 to 1977 (this file). The reconstruction was based on a set of 36 tree-ring chronologies collected in California, Oregon, and Nevada by numerous investigators from the late 1970s to the mid-1990s. This reconstruction was published in 2001 in the Journal of the American Water Resources Association (JAWRA). Because the early portion of the "JAWRA" reconstruction depended heavily on chronologies outside of the Sacramento River basin, Meko generated a second, updated reconstruction of Sacramento River flow (and also of its tributary, the Feather River) in 1999-2001. This reconstruction was based on a set of 42 tree-ring chronologies, 11 of which were not used in the previous reconstruction, including three collected specifically for the new work. The updated reconstruction extends from AD 901 to 1977 and was published in a report to the California Department of Water Resources (CDWR) issued in July 2001. The newer CDWR reconstruction is archived with the WDC Paleo at: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/california/sacramento-flow-cdwr.txt Both reconstructions use three time-varying subsets of the tree-ring data to take advantage of all of the data available in each time period, and explain a very similar fraction (~80%) of the variance in the gaged record. The updated reconstuction is probably more robust because of the expanded spatial coverage of the tree-ring dataset, particularly early in the reconstruction period. DATA: Meko et al. 2001 JAWRA Sacramento River Annual Flow Reconstruction, in millions of acre/feet. Year MAF 869 18.28 870 25.72 871 10.25 872 9.74 873 11.08 874 18.42 875 19.74 876 17.86 877 15.18 878 15.57 879 17.47 880 12.71 881 17.66 882 13.09 883 11.30 884 15.60 885 34.32 886 18.14 887 10.99 888 14.35 889 15.76 890 12.95 891 18.50 892 32.81 893 13.49 894 15.06 895 14.47 896 17.12 897 30.63 898 19.30 899 25.97 900 15.92 901 41.38 902 17.73 903 19.30 904 16.55 905 26.88 906 27.36 907 14.58 908 19.80 909 17.87 910 27.84 911 27.81 912 28.58 913 11.12 914 27.83 915 9.18 916 29.37 917 44.28 918 17.61 919 16.68 920 28.95 921 18.96 922 16.89 923 11.65 924 10.83 925 30.55 926 31.47 927 24.41 928 14.73 929 13.12 930 6.40 931 15.23 932 17.52 933 17.98 934 31.07 935 23.56 936 31.11 937 25.50 938 23.89 939 20.12 940 30.66 941 31.64 942 16.75 943 12.42 944 16.57 945 15.53 946 24.59 947 17.40 948 14.33 949 15.44 950 19.34 951 31.11 952 13.51 953 14.32 954 5.50 955 19.41 956 39.36 957 5.50 958 17.87 959 16.47 960 23.46 961 9.16 962 13.72 963 15.19 964 13.99 965 17.67 966 18.65 967 15.50 968 30.45 969 14.84 970 39.07 971 15.90 972 20.48 973 20.68 974 25.46 975 18.24 976 19.37 977 17.77 978 14.25 979 5.25 980 7.61 981 9.39 982 16.16 983 10.64 984 15.68 985 25.49 986 8.29 987 19.47 988 23.84 989 12.92 990 14.63 991 20.25 992 16.60 993 27.92 994 17.59 995 8.81 996 12.69 997 23.85 998 26.74 999 14.94 1000 18.26 1001 18.43 1002 23.54 1003 19.99 1004 17.72 1005 11.00 1006 20.08 1007 19.26 1008 24.90 1009 25.91 1010 15.81 1011 24.95 1012 8.33 1013 15.35 1014 11.14 1015 16.71 1016 24.06 1017 18.83 1018 14.64 1019 26.20 1020 19.91 1021 15.90 1022 15.87 1023 37.36 1024 20.06 1025 12.77 1026 21.40 1027 22.90 1028 13.52 1029 16.05 1030 22.18 1031 22.26 1032 12.31 1033 12.66 1034 17.07 1035 14.13 1036 29.11 1037 16.34 1038 14.11 1039 12.54 1040 10.43 1041 19.02 1042 28.85 1043 12.70 1044 13.44 1045 25.72 1046 21.03 1047 14.32 1048 11.52 1049 20.83 1050 27.89 1051 17.87 1052 8.82 1053 12.43 1054 27.86 1055 12.87 1056 14.08 1057 22.67 1058 18.49 1059 4.65 1060 11.21 1061 16.41 1062 12.62 1063 18.71 1064 27.52 1065 20.64 1066 14.73 1067 12.87 1068 21.71 1069 15.00 1070 6.79 1071 14.45 1072 6.69 1073 14.76 1074 12.34 1075 13.68 1076 23.20 1077 18.49 1078 25.36 1079 27.01 1080 18.57 1081 13.05 1082 14.47 1083 11.40 1084 25.49 1085 20.28 1086 22.26 1087 26.77 1088 20.30 1089 24.83 1090 13.76 1091 26.01 1092 15.01 1093 8.45 1094 20.95 1095 21.52 1096 16.66 1097 20.65 1098 7.38 1099 20.31 1100 25.88 1101 19.54 1102 17.07 1103 7.92 1104 22.04 1105 23.25 1106 18.48 1107 17.77 1108 19.44 1109 28.19 1110 24.79 1111 18.84 1112 21.96 1113 28.55 1114 14.51 1115 15.63 1116 23.53 1117 19.31 1118 18.39 1119 19.70 1120 24.91 1121 15.55 1122 25.96 1123 10.49 1124 18.64 1125 25.18 1126 5.63 1127 14.56 1128 29.05 1129 16.13 1130 13.64 1131 15.07 1132 12.55 1133 11.24 1134 16.64 1135 8.79 1136 18.28 1137 25.20 1138 20.66 1139 14.38 1140 8.78 1141 13.60 1142 22.56 1143 15.33 1144 9.99 1145 7.68 1146 10.89 1147 16.74 1148 12.65 1149 20.81 1150 14.45 1151 13.13 1152 15.78 1153 15.46 1154 14.00 1155 13.43 1156 9.89 1157 9.10 1158 10.46 1159 15.18 1160 20.71 1161 11.95 1162 14.03 1163 17.91 1164 9.00 1165 23.67 1166 21.20 1167 23.24 1168 8.70 1169 31.54 1170 9.03 1171 13.17 1172 15.27 1173 17.54 1174 10.50 1175 12.45 1176 11.79 1177 13.47 1178 32.15 1179 19.89 1180 18.18 1181 28.82 1182 19.72 1183 7.28 1184 16.71 1185 12.35 1186 17.04 1187 13.39 1188 18.56 1189 15.08 1190 17.59 1191 14.82 1192 17.65 1193 17.00 1194 13.28 1195 29.97 1196 15.58 1197 17.40 1198 15.39 1199 15.94 1200 23.51 1201 21.60 1202 25.11 1203 17.57 1204 25.62 1205 20.08 1206 8.97 1207 21.43 1208 14.11 1209 22.63 1210 13.03 1211 13.41 1212 14.92 1213 9.29 1214 23.94 1215 15.07 1216 27.61 1217 8.34 1218 13.04 1219 29.14 1220 27.74 1221 14.62 1222 20.80 1223 18.97 1224 21.91 1225 21.13 1226 15.37 1227 9.49 1228 24.78 1229 28.79 1230 15.49 1231 9.57 1232 17.28 1233 17.58 1234 13.91 1235 17.35 1236 6.80 1237 9.38 1238 16.02 1239 13.87 1240 24.19 1241 28.74 1242 17.26 1243 20.06 1244 13.74 1245 10.88 1246 24.83 1247 29.14 1248 37.53 1249 16.73 1250 9.87 1251 16.46 1252 20.72 1253 15.75 1254 8.82 1255 20.71 1256 22.46 1257 15.79 1258 18.17 1259 34.19 1260 14.95 1261 11.79 1262 24.61 1263 13.95 1264 6.13 1265 16.05 1266 17.64 1267 13.84 1268 12.61 1269 9.51 1270 27.10 1271 12.48 1272 12.10 1273 5.33 1274 27.08 1275 23.32 1276 17.33 1277 25.83 1278 25.44 1279 6.20 1280 17.12 1281 20.52 1282 19.51 1283 17.82 1284 13.48 1285 6.72 1286 27.73 1287 27.86 1288 13.02 1289 16.05 1290 23.45 1291 36.57 1292 9.20 1293 13.39 1294 14.91 1295 12.95 1296 5.74 1297 12.08 1298 14.07 1299 11.70 1300 10.30 1301 12.11 1302 15.29 1303 15.70 1304 12.61 1305 19.50 1306 15.56 1307 9.38 1308 20.01 1309 9.57 1310 20.63 1311 13.98 1312 11.47 1313 19.17 1314 22.81 1315 13.49 1316 10.45 1317 17.25 1318 18.58 1319 14.37 1320 14.32 1321 16.74 1322 22.75 1323 27.64 1324 10.09 1325 17.03 1326 22.61 1327 29.53 1328 10.58 1329 12.18 1330 47.75 1331 21.81 1332 17.30 1333 12.58 1334 16.34 1335 5.86 1336 18.48 1337 32.52 1338 14.06 1339 18.92 1340 16.51 1341 37.29 1342 14.27 1343 18.64 1344 14.99 1345 27.91 1346 22.81 1347 15.69 1348 17.25 1349 20.41 1350 14.54 1351 6.21 1352 8.28 1353 16.74 1354 8.48 1355 11.67 1356 21.18 1357 23.73 1358 7.04 1359 17.45 1360 13.68 1361 11.02 1362 11.66 1363 14.40 1364 9.70 1365 10.95 1366 18.08 1367 26.65 1368 19.75 1369 11.80 1370 12.59 1371 13.40 1372 19.19 1373 14.94 1374 17.37 1375 13.02 1376 16.97 1377 6.96 1378 24.27 1379 8.11 1380 19.63 1381 14.97 1382 11.44 1383 19.49 1384 9.96 1385 18.13 1386 14.34 1387 15.63 1388 16.80 1389 17.80 1390 7.38 1391 13.16 1392 16.96 1393 21.46 1394 18.79 1395 10.12 1396 14.64 1397 18.18 1398 18.14 1399 14.41 1400 17.60 1401 18.08 1402 18.37 1403 23.25 1404 21.01 1405 15.65 1406 18.80 1407 10.53 1408 10.35 1409 19.36 1410 9.03 1411 20.57 1412 18.86 1413 8.88 1414 17.70 1415 19.64 1416 16.14 1417 21.82 1418 21.62 1419 14.33 1420 35.06 1421 18.21 1422 31.39 1423 26.29 1424 24.59 1425 11.58 1426 12.38 1427 17.89 1428 12.74 1429 18.72 1430 22.40 1431 18.05 1432 12.06 1433 18.46 1434 12.95 1435 19.80 1436 22.54 1437 12.90 1438 22.22 1439 11.25 1440 30.34 1441 31.31 1442 22.16 1443 18.17 1444 15.41 1445 34.78 1446 22.74 1447 28.64 1448 17.00 1449 28.97 1450 17.87 1451 17.94 1452 13.80 1453 19.61 1454 12.57 1455 17.78 1456 14.27 1457 10.58 1458 16.20 1459 12.45 1460 13.32 1461 11.92 1462 17.72 1463 16.08 1464 14.94 1465 11.20 1466 14.79 1467 19.39 1468 7.75 1469 22.55 1470 30.16 1471 14.78 1472 17.84 1473 13.92 1474 19.99 1475 9.49 1476 10.42 1477 16.08 1478 15.82 1479 7.02 1480 12.01 1481 16.19 1482 13.63 1483 20.80 1484 34.86 1485 14.40 1486 22.78 1487 25.26 1488 24.92 1489 23.38 1490 21.64 1491 18.91 1492 11.80 1493 27.18 1494 18.64 1495 19.00 1496 22.36 1497 7.04 1498 15.77 1499 7.19 1500 5.74 1501 18.27 1502 18.43 1503 19.47 1504 23.96 1505 9.69 1506 21.50 1507 18.95 1508 17.80 1509 19.05 1510 13.02 1511 17.49 1512 18.08 1513 15.05 1514 19.23 1515 7.80 1516 8.53 1517 16.59 1518 8.30 1519 18.21 1520 16.19 1521 12.46 1522 17.44 1523 23.15 1524 29.29 1525 17.49 1526 32.09 1527 20.50 1528 15.13 1529 5.05 1530 17.35 1531 14.89 1532 4.98 1533 10.25 1534 25.64 1535 15.22 1536 13.50 1537 13.92 1538 16.50 1539 36.00 1540 12.49 1541 7.85 1542 13.68 1543 13.38 1544 19.09 1545 14.63 1546 15.80 1547 15.80 1548 7.05 1549 15.98 1550 8.82 1551 18.17 1552 16.76 1553 28.79 1554 9.89 1555 11.75 1556 22.13 1557 24.29 1558 16.02 1559 26.68 1560 33.79 1561 18.20 1562 21.29 1563 21.54 1564 43.23 1565 19.39 1566 17.24 1567 30.04 1568 32.52 1569 13.23 1570 22.94 1571 5.60 1572 15.56 1573 29.63 1574 20.77 1575 15.17 1576 12.34 1577 35.45 1578 13.35 1579 6.02 1580 1.52 1581 15.05 1582 15.83 1583 25.45 1584 16.97 1585 14.86 1586 19.87 1587 30.26 1588 20.26 1589 26.77 1590 10.98 1591 17.76 1592 13.09 1593 12.76 1594 11.66 1595 10.92 1596 21.75 1597 19.20 1598 12.33 1599 26.22 1600 7.49 1601 22.78 1602 21.07 1603 19.33 1604 28.66 1605 19.09 1606 21.42 1607 8.26 1608 21.76 1609 20.16 1610 19.98 1611 30.63 1612 18.10 1613 10.70 1614 14.47 1615 17.26 1616 18.19 1617 40.32 1618 11.56 1619 11.73 1620 18.36 1621 19.60 1622 10.37 1623 31.68 1624 30.48 1625 31.41 1626 11.18 1627 23.52 1628 17.51 1629 13.49 1630 18.03 1631 14.52 1632 8.80 1633 17.77 1634 16.77 1635 19.13 1636 16.70 1637 16.00 1638 13.29 1639 7.79 1640 26.67 1641 41.01 1642 17.02 1643 18.30 1644 16.66 1645 12.72 1646 14.30 1647 19.90 1648 21.01 1649 21.12 1650 21.38 1651 19.99 1652 9.82 1653 10.08 1654 9.24 1655 8.48 1656 25.47 1657 14.03 1658 14.46 1659 12.99 1660 18.42 1661 23.42 1662 19.73 1663 13.25 1664 23.21 1665 18.41 1666 17.41 1667 8.52 1668 20.10 1669 15.14 1670 11.09 1671 17.96 1672 29.44 1673 17.86 1674 21.97 1675 20.47 1676 12.95 1677 19.80 1678 18.48 1679 17.34 1680 17.44 1681 12.86 1682 22.46 1683 23.63 1684 21.41 1685 20.73 1686 10.68 1687 20.36 1688 16.10 1689 18.56 1690 14.81 1691 9.62 1692 19.87 1693 27.25 1694 24.31 1695 13.42 1696 26.79 1697 36.09 1698 13.90 1699 15.84 1700 34.27 1701 18.82 1702 38.71 1703 10.71 1704 26.32 1705 21.83 1706 12.06 1707 16.84 1708 13.10 1709 30.27 1710 12.95 1711 15.73 1712 20.12 1713 25.52 1714 12.80 1715 20.97 1716 21.15 1717 17.71 1718 15.02 1719 13.11 1720 20.15 1721 7.66 1722 13.50 1723 21.97 1724 16.39 1725 28.46 1726 18.19 1727 27.99 1728 15.91 1729 7.03 1730 37.31 1731 18.27 1732 22.00 1733 11.45 1734 24.01 1735 10.56 1736 9.33 1737 10.99 1738 26.66 1739 13.98 1740 22.64 1741 17.22 1742 23.37 1743 25.01 1744 23.80 1745 35.87 1746 24.67 1747 25.36 1748 12.04 1749 20.17 1750 16.97 1751 15.48 1752 21.99 1753 18.81 1754 19.50 1755 13.95 1756 8.98 1757 12.77 1758 17.50 1759 15.30 1760 16.82 1761 20.07 1762 16.07 1763 20.67 1764 16.16 1765 8.74 1766 19.54 1767 19.44 1768 24.25 1769 21.70 1770 9.30 1771 19.32 1772 17.66 1773 18.80 1774 22.94 1775 21.52 1776 6.87 1777 6.05 1778 11.71 1779 19.39 1780 15.32 1781 16.71 1782 9.32 1783 7.79 1784 32.12 1785 30.00 1786 22.28 1787 21.72 1788 12.09 1789 34.49 1790 32.59 1791 21.87 1792 29.33 1793 12.68 1794 9.65 1795 6.40 1796 10.00 1797 24.18 1798 23.26 1799 26.48 1800 9.46 1801 32.71 1802 22.89 1803 17.70 1804 19.98 1805 15.86 1806 21.70 1807 16.12 1808 13.15 1809 16.26 1810 21.65 1811 24.36 1812 11.76 1813 19.51 1814 16.50 1815 15.35 1816 16.27 1817 16.56 1818 14.64 1819 21.74 1820 18.15 1821 17.66 1822 9.19 1823 14.47 1824 13.70 1825 38.83 1826 29.96 1827 15.74 1828 21.67 1829 5.83 1830 22.06 1831 18.35 1832 36.97 1833 16.27 1834 11.33 1835 21.85 1836 24.63 1837 15.35 1838 22.09 1839 11.10 1840 16.58 1841 6.74 1842 20.84 1843 8.34 1844 8.12 1845 18.08 1846 10.55 1847 21.08 1848 16.33 1849 14.05 1850 20.34 1851 12.04 1852 18.77 1853 29.22 1854 18.32 1855 16.43 1856 11.04 1857 14.83 1858 12.43 1859 14.88 1860 20.50 1861 23.98 1862 24.77 1863 16.04 1864 6.23 1865 17.50 1866 32.71 1867 23.42 1868 33.20 1869 15.14 1870 11.66 1871 11.83 1872 21.81 1873 21.85 1874 19.32 1875 15.49 1876 24.67 1877 10.15 1878 29.20 1879 15.46 1880 17.56 1881 26.96 1882 15.40 1883 14.15 1884 28.25 1885 17.17 1886 18.14 1887 14.47 1888 16.54 1889 14.37 1890 20.49 1891 23.60 1892 13.05 1893 25.44 1894 26.64 1895 17.94 1896 19.63 1897 20.73 1898 8.89 1899 15.45 1900 18.50 1901 24.28 1902 15.28 1903 17.47 1904 25.03 1905 21.14 1906 24.57 1907 34.97 1908 19.91 1909 21.94 1910 16.46 1911 19.69 1912 12.18 1913 11.87 1914 21.70 1915 18.03 1916 23.25 1917 16.82 1918 10.16 1919 19.35 1920 11.00 1921 22.12 1922 18.22 1923 19.29 1924 5.74 1925 19.77 1926 13.07 1927 17.79 1928 15.18 1929 8.76 1930 12.95 1931 6.70 1932 18.50 1933 10.73 1934 7.61 1935 20.13 1936 20.32 1937 17.16 1938 20.02 1939 9.47 1940 22.35 1941 24.63 1942 28.21 1943 21.69 1944 14.29 1945 17.06 1946 17.57 1947 10.52 1948 13.01 1949 10.95 1950 17.20 1951 21.84 1952 28.47 1953 22.28 1954 18.62 1955 10.29 1956 24.03 1957 19.52 1958 23.83 1959 9.39 1960 13.71 1961 11.33 1962 19.22 1963 29.34 1964 12.22 1965 23.64 1966 17.85 1967 21.50 1968 11.07 1969 36.44 1970 16.23 1971 18.31 1972 13.68 1973 15.78 1974 24.12 1975 18.66 1976 7.91 1977 6.32