Dorena Lake Near Cottage Grove, OR
United States Geological Survey reservoir gauge 14155000 in OR, with published storage from 1949.
Storage now, against this reservoir's own record
Storage in September 1974 was higher than almost every other Sep on record, ranked against 25 other Seps held for this reservoir.
Storage, 1949–1974
Monthly means of the publisher's daily record. Volume, not percentage of capacity: without a capacity whose definition is stated, fullness cannot be computed.
View the data behind this chart
| Period | Dorena Lake Near Cottage Grove, OR (Mm³) |
|---|---|
| October 1949 | 1.35 |
| November 1949 | 4.85 |
| December 1949 | 8.54 |
| January 1950 | 12.8 |
| February 1950 | 17.5 |
| March 1950 | 44.3 |
| April 1950 | 64.4 |
| May 1950 | 85.2 |
| June 1950 | 88.9 |
| July 1950 | 88.3 |
| August 1950 | 84.0 |
| September 1950 | 69.4 |
| October 1950 | 47.9 |
| November 1950 | 24.1 |
| December 1950 | 9.04 |
| January 1951 | 11.2 |
| February 1951 | 21.4 |
| March 1951 | 42.5 |
| April 1951 | 62.4 |
| May 1951 | 83.7 |
| June 1951 | 88.2 |
| July 1951 | 83.6 |
| August 1951 | 79.5 |
| September 1951 | 75.7 |
| October 1951 | 57.0 |
| November 1951 | 13.6 |
| December 1951 | 10.4 |
| January 1952 | 9.07 |
| February 1952 | 16.7 |
| March 1952 | 45.1 |
| April 1952 | 64.3 |
| May 1952 | 85.7 |
| June 1952 | 91.4 |
| July 1952 | 88.6 |
| August 1952 | 75.7 |
| September 1952 | 49.5 |
| October 1952 | 20.1 |
| November 1952 | 8.70 |
| December 1952 | 8.87 |
| January 1953 | 21.1 |
| February 1953 | 21.0 |
| March 1953 | 41.7 |
| April 1953 | 63.9 |
| May 1953 | 86.0 |
| June 1953 | 89.9 |
| July 1953 | 87.9 |
| August 1953 | 70.2 |
| September 1953 | 35.0 |
| October 1953 | 18.5 |
| November 1953 | 22.8 |
| December 1953 | 18.3 |
| January 1954 | 15.0 |
| February 1954 | 20.6 |
| March 1954 | 40.2 |
| April 1954 | 63.1 |
| May 1954 | 71.3 |
| June 1954 | 78.6 |
| July 1954 | 84.6 |
| August 1954 | 63.1 |
| September 1954 | 34.9 |
| October 1954 | 18.4 |
| November 1954 | 8.80 |
| December 1954 | 9.25 |
| January 1955 | 9.78 |
| February 1955 | 18.5 |
| March 1955 | 44.3 |
| April 1955 | 64.5 |
| May 1955 | 86.0 |
| June 1955 | 89.5 |
| July 1955 | 88.5 |
| August 1955 | 51.4 |
| September 1955 | 11.8 |
| October 1955 | 12.6 |
| November 1955 | 18.7 |
| December 1955 | 45.3 |
| January 1956 | 23.9 |
| February 1956 | 22.3 |
| March 1956 | 41.5 |
| April 1956 | 64.5 |
| May 1956 | 85.5 |
| June 1956 | 89.6 |
| July 1956 | 88.4 |
| August 1956 | 60.4 |
| September 1956 | 18.8 |
| October 1956 | 16.5 |
| November 1956 | 10.3 |
| December 1956 | 19.3 |
| January 1957 | 9.02 |
| February 1957 | 33.7 |
| March 1957 | 59.4 |
| April 1957 | 67.6 |
| May 1957 | 79.1 |
| June 1957 | 87.5 |
| July 1957 | 70.5 |
| August 1957 | 26.2 |
| September 1957 | 14.0 |
| October 1957 | 14.7 |
| November 1957 | 13.3 |
| December 1957 | 29.0 |
| January 1958 | 14.7 |
| February 1958 | 31.2 |
| March 1958 | 41.3 |
| April 1958 | 63.5 |
| May 1958 | 81.2 |
| June 1958 | 92.1 |
| July 1958 | 85.9 |
| August 1958 | 29.6 |
| September 1958 | 4.60 |
| October 1958 | 3.55 |
| November 1958 | 11.5 |
| December 1958 | 9.69 |
| January 1959 | 17.2 |
| February 1959 | 22.6 |
| March 1959 | 44.9 |
| April 1959 | 71.2 |
| May 1959 | 87.1 |
| June 1959 | 91.2 |
| July 1959 | 80.3 |
| August 1959 | 33.4 |
| September 1959 | 18.2 |
| October 1959 | 19.9 |
| November 1959 | 9.98 |
| December 1959 | 9.39 |
| January 1960 | 10.7 |
| February 1960 | 28.0 |
| March 1960 | 51.1 |
| April 1960 | 67.6 |
| May 1960 | 85.3 |
| June 1960 | 91.3 |
| July 1960 | 84.6 |
| August 1960 | 52.6 |
| September 1960 | 25.3 |
| October 1960 | 15.5 |
| November 1960 | 19.9 |
| December 1960 | 10.6 |
| January 1961 | 9.10 |
| February 1961 | 49.2 |
| March 1961 | 44.3 |
| April 1961 | 63.8 |
| May 1961 | 87.3 |
| June 1961 | 91.8 |
| July 1961 | 86.0 |
| August 1961 | 73.6 |
| September 1961 | 50.8 |
| October 1961 | 37.3 |
| November 1961 | 30.1 |
| December 1961 | 18.9 |
| January 1962 | 9.39 |
| February 1962 | 21.7 |
| March 1962 | 46.3 |
| April 1962 | 64.5 |
| May 1962 | 86.2 |
| June 1962 | 90.2 |
| July 1962 | 85.7 |
| August 1962 | 61.2 |
| September 1962 | 17.2 |
| October 1962 | 4.99 |
| November 1962 | 8.97 |
| December 1962 | 13.4 |
| January 1963 | 8.87 |
| February 1963 | 28.4 |
| March 1963 | 47.7 |
| April 1963 | 67.3 |
| May 1963 | 91.4 |
| June 1963 | 91.3 |
| July 1963 | 89.5 |
| August 1963 | 58.5 |
| September 1963 | 23.4 |
| October 1963 | 9.42 |
| November 1963 | 13.0 |
| December 1963 | 9.54 |
| January 1964 | 23.1 |
| February 1964 | 20.4 |
| March 1964 | 42.8 |
| April 1964 | 65.0 |
| May 1964 | 88.6 |
| June 1964 | 90.7 |
| July 1964 | 87.0 |
| August 1964 | 51.7 |
| September 1964 | 20.8 |
| October 1964 | 12.7 |
| November 1964 | 11.0 |
| December 1964 | 44.9 |
| January 1965 | 26.0 |
| February 1965 | 23.4 |
| March 1965 | 35.7 |
| April 1965 | 51.6 |
| May 1965 | 78.8 |
| June 1965 | 82.3 |
| July 1965 | 74.5 |
| August 1965 | 48.0 |
| September 1965 | 23.6 |
| October 1965 | 14.7 |
| November 1965 | 8.90 |
| December 1965 | 9.61 |
| January 1966 | 23.6 |
| February 1966 | 19.4 |
| March 1966 | 42.4 |
| April 1966 | 63.1 |
| May 1966 | 72.0 |
| June 1966 | 66.2 |
| July 1966 | 55.3 |
| August 1966 | 35.0 |
| September 1966 | 18.5 |
| October 1966 | 12.9 |
| November 1966 | 13.3 |
| December 1966 | 11.3 |
| January 1967 | 15.5 |
| February 1967 | 25.2 |
| March 1967 | 43.1 |
| April 1967 | 65.1 |
| May 1967 | 84.6 |
| June 1967 | 88.4 |
| July 1967 | 82.1 |
| August 1967 | 51.3 |
| September 1967 | 23.7 |
| October 1967 | 17.4 |
| November 1967 | 9.05 |
| December 1967 | 9.72 |
| January 1968 | 10.2 |
| February 1968 | 28.4 |
| March 1968 | 48.8 |
| April 1968 | 68.6 |
| May 1968 | 78.0 |
| June 1968 | 89.6 |
| July 1968 | 81.7 |
| August 1968 | 42.1 |
| September 1968 | 25.1 |
| October 1968 | 18.2 |
| November 1968 | 16.0 |
| December 1968 | 12.4 |
| January 1969 | 10.4 |
| February 1969 | 19.8 |
| March 1969 | 42.5 |
| April 1969 | 61.3 |
| May 1969 | 85.5 |
| June 1969 | 89.6 |
| July 1969 | 89.8 |
| August 1969 | 78.0 |
| September 1969 | 51.7 |
| October 1969 | 26.4 |
| November 1969 | 9.00 |
| December 1969 | 17.2 |
| January 1970 | 41.6 |
| February 1970 | 33.8 |
| March 1970 | 49.5 |
| April 1970 | 68.3 |
| May 1970 | 87.7 |
| June 1970 | 87.4 |
| July 1970 | 77.8 |
| August 1970 | 51.1 |
| September 1970 | 22.7 |
| October 1970 | 15.2 |
| November 1970 | 12.7 |
| December 1970 | 4.83 |
| January 1971 | 42.8 |
| February 1971 | 28.1 |
| March 1971 | 42.5 |
| April 1971 | 64.3 |
| May 1971 | 84.9 |
| June 1971 | 90.1 |
| July 1971 | 87.7 |
| August 1971 | 72.8 |
| September 1971 | 49.5 |
| October 1971 | 22.5 |
| November 1971 | 15.2 |
| December 1971 | 21.0 |
| January 1972 | 39.3 |
| February 1972 | 25.7 |
| March 1972 | 66.9 |
| April 1972 | 66.2 |
| May 1972 | 84.7 |
| June 1972 | 89.8 |
| July 1972 | 84.4 |
| August 1972 | 71.9 |
| September 1972 | 54.7 |
| October 1972 | 30.4 |
| November 1972 | 8.90 |
| December 1972 | 10.5 |
| January 1973 | 13.2 |
| February 1973 | 23.5 |
| March 1973 | 50.2 |
| April 1973 | 81.5 |
| May 1973 | 89.2 |
| June 1973 | 88.3 |
| July 1973 | 80.9 |
| August 1973 | 66.9 |
| September 1973 | 53.7 |
| October 1973 | 29.9 |
| November 1973 | 22.4 |
| December 1973 | 16.6 |
| January 1974 | 32.3 |
| February 1974 | 22.7 |
| March 1974 | 43.4 |
| April 1974 | 66.8 |
| May 1974 | 85.2 |
| June 1974 | 90.6 |
| July 1974 | 87.5 |
| August 1974 | 76.1 |
| September 1974 | 57.7 |
Rate and persistence
Rates are computed only across an unbroken run of months, so a rate is never divided by a period in which some of the change was not observed. Percentile counts compare each month with the same calendar month in every other year held.
Location
Where this comes from
Source: USGS — National Water Information System, 14155000. Licence: Open.
Method: Monthly mean of daily reservoir storage published by the USGS in acre-feet and converted to millions of cubic metres. Months with fewer than 20 days of record are not published rather than averaged from a partial month.
Reservoir storage is managed as well as observed: a drawdown may reflect an operating rule, flood-control rule curve or scheduled release rather than a shortage. Compare a month against the same month in other years, and do not read a fall as a supply signal without knowing the operating regime.
Retrieved 25 August 2026.
Monthly mean of daily reservoir storage published by the USGS in acre-feet and converted to millions of cubic metres. Months with fewer than 20 days of record are not published rather than averaged from a partial month.