Colorado River at Lees Ferry, AZ (Woodhouse) Upper Colorado River Basin Annual (Water Year, Oct-Sep) streamflow reconstruction Values in acre-feet Recon = reconstruction Observed = natural flow record from Bureau of Reclamation Recon Interval: 1490-1997 Observed Interval: 1906-1995 PI: C. Woodhouse, S. Gray, D. Meko Reference: Woodhouse, C.A., S.T. Gray, and D.M. Meko. 2006. Updated streamflow reconstructions for the Upper Colorado River basin. Water Resources Research 42, W05415 URL: http://treeflow.info/upco/coloradoleeswoodhouse.html Add'l Info: http://www.ncdc.noaa.gov/paleo/pubs/woodhouse2006/woodhouse2006.html Note: Reconstruction below is the "Lees-A" model ========== Year Recon Observed 1490 15504161 -9999 1491 20255176 -9999 1492 14224767 -9999 1493 15521164 -9999 1494 19589049 -9999 1495 4968863 -9999 1496 6732468 -9999 1497 13597071 -9999 1498 20596791 -9999 1499 9998422 -9999 1500 7112217 -9999 1501 14119991 -9999 1502 16223772 -9999 1503 13369294 -9999 1504 17330444 -9999 1505 9057694 -9999 1506 4902428 -9999 1507 17029145 -9999 1508 15828269 -9999 1509 20902540 -9999 1510 11027256 -9999 1511 16472713 -9999 1512 13267396 -9999 1513 12331537 -9999 1514 18920563 -9999 1515 11193812 -9999 1516 11425553 -9999 1517 14258023 -9999 1518 10189323 -9999 1519 17517964 -9999 1520 12744756 -9999 1521 25007966 -9999 1522 6471574 -9999 1523 21884306 -9999 1524 16723708 -9999 1525 15324639 -9999 1526 16669323 -9999 1527 16293610 -9999 1528 9513257 -9999 1529 14043106 -9999 1530 15061478 -9999 1531 8027677 -9999 1532 4860883 -9999 1533 14592246 -9999 1534 14386046 -9999 1535 16256410 -9999 1536 21904472 -9999 1537 17035044 -9999 1538 7239492 -9999 1539 16665727 -9999 1540 15484455 -9999 1541 15245227 -9999 1542 1951061 -9999 1543 13958877 -9999 1544 13153933 -9999 1545 10439389 -9999 1546 19075977 -9999 1547 14541185 -9999 1548 16009195 -9999 1549 22232065 -9999 1550 16520732 -9999 1551 13626745 -9999 1552 12356447 -9999 1553 20580868 -9999 1554 15059153 -9999 1555 15484101 -9999 1556 13688415 -9999 1557 18934436 -9999 1558 7379714 -9999 1559 13673479 -9999 1560 17242864 -9999 1561 14993965 -9999 1562 10993545 -9999 1563 12908466 -9999 1564 20491417 -9999 1565 17623225 -9999 1566 14135756 -9999 1567 10832246 -9999 1568 14545121 -9999 1569 13599403 -9999 1570 17091231 -9999 1571 14842057 -9999 1572 17765868 -9999 1573 12234090 -9999 1574 5886341 -9999 1575 17774559 -9999 1576 10820236 -9999 1577 19105090 -9999 1578 17324485 -9999 1579 11582165 -9999 1580 5679312 -9999 1581 16275819 -9999 1582 16471974 -9999 1583 14432993 -9999 1584 1693486 -9999 1585 11056110 -9999 1586 18393503 -9999 1587 13218532 -9999 1588 17995731 -9999 1589 17759498 -9999 1590 6663378 -9999 1591 9809006 -9999 1592 8770916 -9999 1593 15059364 -9999 1594 17934913 -9999 1595 19044845 -9999 1596 21296403 -9999 1597 12060689 -9999 1598 3499749 -9999 1599 19878000 -9999 1600 5872411 -9999 1601 19312499 -9999 1602 16927161 -9999 1603 19907530 -9999 1604 21884379 -9999 1605 21129795 -9999 1606 16267437 -9999 1607 4931490 -9999 1608 17765225 -9999 1609 15737865 -9999 1610 17068266 -9999 1611 16854067 -9999 1612 16539642 -9999 1613 18032469 -9999 1614 19736614 -9999 1615 17946371 -9999 1616 18717704 -9999 1617 19512960 -9999 1618 20113988 -9999 1619 15312049 -9999 1620 15803727 -9999 1621 19697601 -9999 1622 9684801 -9999 1623 12708768 -9999 1624 11177427 -9999 1625 10729795 -9999 1626 7315218 -9999 1627 15446085 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1678 21948578 -9999 1679 12871355 -9999 1680 24363829 -9999 1681 16540947 -9999 1682 11335663 -9999 1683 21402692 -9999 1684 11925720 -9999 1685 1754610 -9999 1686 7827818 -9999 1687 18046863 -9999 1688 20691587 -9999 1689 16797789 -9999 1690 14958029 -9999 1691 20017630 -9999 1692 16304526 -9999 1693 18084357 -9999 1694 16375748 -9999 1695 13185576 -9999 1696 16789616 -9999 1697 15464374 -9999 1698 19898141 -9999 1699 16879942 -9999 1700 12846605 -9999 1701 21353051 -9999 1702 18266760 -9999 1703 11877861 -9999 1704 9272334 -9999 1705 17395213 -9999 1706 10296258 -9999 1707 12088340 -9999 1708 9133529 -9999 1709 17906818 -9999 1710 14752755 -9999 1711 13845623 -9999 1712 15779482 -9999 1713 11814310 -9999 1714 5619073 -9999 1715 17350468 -9999 1716 14664849 -9999 1717 11581731 -9999 1718 16715795 -9999 1719 20937584 -9999 1720 24481102 -9999 1721 13684308 -9999 1722 5611686 -9999 1723 12868888 -9999 1724 15588129 -9999 1725 18490525 -9999 1726 24781248 -9999 1727 17091833 -9999 1728 11838080 -9999 1729 8551106 -9999 1730 13692333 -9999 1731 14719412 -9999 1732 12076091 -9999 1733 18116812 -9999 1734 19922854 -9999 1735 3606749 -9999 1736 6398124 -9999 1737 13542654 -9999 1738 17294959 -9999 1739 17788887 -9999 1740 10304598 -9999 1741 19378164 -9999 1742 16406526 -9999 1743 17915660 -9999 1744 9286741 -9999 1745 17744472 -9999 1746 19519113 -9999 1747 21311937 -9999 1748 8505220 -9999 1749 18733748 -9999 1750 12031339 -9999 1751 17049171 -9999 1752 13018746 -9999 1753 21991337 -9999 1754 15296266 -9999 1755 9333813 -9999 1756 6972585 -9999 1757 11825708 -9999 1758 15434437 -9999 1759 10536998 -9999 1760 19171174 -9999 1761 18422074 -9999 1762 19956323 -9999 1763 9512179 -9999 1764 20184432 -9999 1765 9022713 -9999 1766 17348232 -9999 1767 12899860 -9999 1768 21699927 -9999 1769 19696256 -9999 1770 14664945 -9999 1771 18424871 -9999 1772 9855841 -9999 1773 6526748 -9999 1774 15495232 -9999 1775 15821532 -9999 1776 11258112 -9999 1777 11748779 -9999 1778 9508069 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1829 7833936 -9999 1830 15303468 -9999 1831 17266347 -9999 1832 20542131 -9999 1833 14591298 -9999 1834 8342252 -9999 1835 16235065 -9999 1836 16273150 -9999 1837 22450718 -9999 1838 19694275 -9999 1839 21462864 -9999 1840 22684964 -9999 1841 21996140 -9999 1842 9482478 -9999 1843 19293998 -9999 1844 14049123 -9999 1845 2489661 -9999 1846 8278634 -9999 1847 8049144 -9999 1848 14859644 -9999 1849 24161630 -9999 1850 17927515 -9999 1851 4841174 -9999 1852 18453305 -9999 1853 19547040 -9999 1854 14255686 -9999 1855 7387015 -9999 1856 14979981 -9999 1857 14291671 -9999 1858 17979478 -9999 1859 15291865 -9999 1860 17962899 -9999 1861 3273146 -9999 1862 25379038 -9999 1863 12413159 -9999 1864 13567168 -9999 1865 15922542 -9999 1866 25253219 -9999 1867 23370804 -9999 1868 16766912 -9999 1869 15414683 -9999 1870 14020619 -9999 1871 5801661 -9999 1872 18460758 -9999 1873 14257212 -9999 1874 10894286 -9999 1875 13753577 -9999 1876 14766789 -9999 1877 12382514 -9999 1878 13004555 -9999 1879 5868685 -9999 1880 14122707 -9999 1881 13799192 -9999 1882 11048772 -9999 1883 10794638 -9999 1884 20528981 -9999 1885 19629583 -9999 1886 13668620 -9999 1887 8410607 -9999 1888 12509957 -9999 1889 10082667 -9999 1890 15758508 -9999 1891 17428593 -9999 1892 15596168 -9999 1893 10817276 -9999 1894 13628789 -9999 1895 17734355 -9999 1896 7384411 -9999 1897 19718234 -9999 1898 15667222 -9999 1899 11209537 -9999 1900 11587585 -9999 1901 13408923 -9999 1902 4872945 -9999 1903 17382952 -9999 1904 11876619 -9999 1905 18909226 -9999 1906 20240566 18074748 1907 18600060 21447585 1908 11952826 12285889 1909 19329651 21994694 1910 11529661 14833481 1911 17307697 14980102 1912 17224341 19079891 1913 13039916 14470483 1914 21317644 21064293 1915 12943830 14135948 1916 15455582 19185292 1917 21371393 23846459 1918 14772412 15748873 1919 14301451 12949950 1920 19219226 21925402 1921 21388218 22700400 1922 15215322 18667393 1923 18719548 18341508 1924 16203471 14637373 1925 11378337 13409244 1926 18469850 16112127 1927 17650412 18549682 1928 17896341 17575792 1929 17672247 21404538 1930 15595981 15281709 1931 13764335 8630705 1932 18170740 17543462 1933 12531724 12128636 1934 6930129 6626737 1935 13490325 12278579 1936 11613310 14483681 1937 15453795 14160090 1938 16936770 17917958 1939 12402317 11716676 1940 12134595 9379177 1941 18216148 18317188 1942 20121511 19425977 1943 13798883 13622878 1944 14753957 15510686 1945 11528439 13911078 1946 10302067 11061426 1947 17213196 15914409 1948 15705556 15878325 1949 19327772 16660216 1950 13334794 13316357 1951 11273454 12484366 1952 20633323 20897587 1953 10079637 11202685 1954 7192925 8367158 1955 14645273 9794319 1956 11633586 11503745 1957 20997871 20157434 1958 14646473 16897951 1959 8245610 9231452 1960 15201783 11973440 1961 10036343 9246691 1962 20349230 17767262 1963 11302640 9258362 1964 12080831 10799933 1965 17105367 18864184 1966 10772113 11620863 1967 14537363 11807086 1968 12601430 13506649 1969 16642194 14847967 1970 15977890 15342460 1971 13552386 15159458 1972 11908082 12386972 1973 20027649 19217582 1974 14155222 13245672 1975 17733384 16806032 1976 12766105 11325076 1977 4710517 5570538 1978 17645089 14915780 1979 16284142 17802390 1980 14751304 17561032 1981 9237531 8801147 1982 16882725 16679915 1983 23908634 24294195 1984 22150802 25274888 1985 20261445 21440380 1986 21765555 22445985 1987 17403352 16935970 1988 13496728 11771457 1989 11357064 10059786 1990 10208059 9400580 1991 16495043 12203613 1992 13543196 11030792 1993 18364592 18140613 1994 10507772 10649656 1995 18306822 20026668 1996 16413652 -9999 1997 16978188 -9999