Big Hill Reservoir Weather Records (ASN00081088)

Record envelope, standing records and threshold days for Big Hill Reservoir (ASN00081088), Australia, with 109 years of record.

Key Facts for Big Hill Reservoir

Big Hill Reservoir (ASN00081088) is a weather station in Australia at -36.83 latitude and 144.23 longitude, n/a above sea level.
The station reports from 1878 to 1986, 109 years of record.
0 records set at Big Hill Reservoir still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Big Hill Reservoir set a daily record precipitation of 21.2 mm (0.8 in) on 8 December 1985.

About the Station

Location: Australia, -36.83 latitude, 144.23 longitude.
Elevation: n/a.
Period of record: 1878 to 1986, 109 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Big Hill Reservoir. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Big Hill Reservoir, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Big Hill Reservoir still stand.

Wettest Day of Each Month

Jan: 83.8 mm (3.3 in)

The wettest day on record for each calendar month at Big Hill Reservoir. The most was 83.8 mm (3.3 in) on 9 January 1897.

Record daily precipitation for each month at Big Hill Reservoir
Month	Record daily precipitation (mm)	Date
Jan	83.8 mm (3.3 in)	9 January 1897
Feb	69.6 mm (2.7 in)	9 February 1911
Mar	64.5 mm (2.5 in)	18 March 1950
Apr	67.3 mm (2.6 in)	22 April 1896
May	50.0 mm (2.0 in)	16 May 1918
Jun	64.0 mm (2.5 in)	15 June 1898
Jul	52.1 mm (2.1 in)	26 July 1936
Aug	48.3 mm (1.9 in)	20 August 1909
Sep	71.1 mm (2.8 in)	8 September 1921
Oct	56.4 mm (2.2 in)	7 October 1975
Nov	69.8 mm (2.7 in)	2 November 1976
Dec	74.2 mm (2.9 in)	12 December 1954

Latest Records

Latest records at Big Hill Reservoir
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
8 December 1985	Big Hill Reservoir, AU	daily rain	21.2 mm (0.8 in)	7.5 mm (0.30 in)	55 years	20 of 100 (Routine)
7 December 1985	Big Hill Reservoir, AU	daily rain	23.4 mm (0.9 in)	8.4 mm (0.33 in)	55 years	20 of 100 (Routine)
24 October 1985	Big Hill Reservoir, AU	daily rain	29.8 mm (1.2 in)	5.7 mm (0.22 in)	83 years	41 of 100 (Notable)
29 May 1985	Big Hill Reservoir, AU	daily rain	49.2 mm (1.9 in)	28.9 mm (1.1 in)	48 years	63 of 100 (Major)
3 April 1985	Big Hill Reservoir, AU	daily rain	22.5 mm (0.9 in)	8.3 mm (0.33 in)	91 years	20 of 100 (Routine)
2 April 1985	Big Hill Reservoir, AU	daily rain	13.2 mm (0.5 in)	9.4 mm (0.37 in)	71 years	20 of 100 (Routine)
5 August 1984	Big Hill Reservoir, AU	daily rain	24.9 mm (1.0 in)	7.4 mm (0.29 in)	84 years	20 of 100 (Routine)
16 July 1984	Big Hill Reservoir, AU	daily rain	24.2 mm (1.0 in)	4.9 mm (0.19 in)	11 years	20 of 100 (Routine)
16 January 1984	Big Hill Reservoir, AU	daily rain	45.0 mm (1.8 in)	29.5 mm (1.2 in)	44 years	50 of 100 (Notable)
25 November 1983	Big Hill Reservoir, AU	daily rain	16.8 mm (0.7 in)	4.4 mm (0.17 in)	28 years	20 of 100 (Routine)
24 April 1983	Big Hill Reservoir, AU	daily rain	36.7 mm (1.4 in)	7.0 mm (0.28 in)	21 years	24 of 100 (Routine)
16 April 1982	Big Hill Reservoir, AU	daily rain	12.4 mm (0.5 in)	1.0 mm (0.04 in)	49 years	20 of 100 (Routine)
9 March 1982	Big Hill Reservoir, AU	daily rain	17.3 mm (0.7 in)	4.9 mm (0.19 in)	32 years	20 of 100 (Routine)
25 January 1982	Big Hill Reservoir, AU	daily rain	20.3 mm (0.8 in)	4.8 mm (0.19 in)	48 years	20 of 100 (Routine)
3 October 1981	Big Hill Reservoir, AU	daily rain	25.5 mm (1.0 in)	6.3 mm (0.25 in)	4 years	19 of 100 (Routine)
4 August 1981	Big Hill Reservoir, AU	daily rain	18.1 mm (0.7 in)	1.3 mm (0.05 in)	28 years	20 of 100 (Routine)
29 July 1981	Big Hill Reservoir, AU	daily rain	18.4 mm (0.7 in)	0.6 mm (0.02 in)	48 years	20 of 100 (Routine)
22 July 1981	Big Hill Reservoir, AU	daily rain	18.0 mm (0.7 in)	1.5 mm (0.06 in)	87 years	20 of 100 (Routine)
21 July 1981	Big Hill Reservoir, AU	daily rain	15.5 mm (0.6 in)	0.8 mm (0.03 in)	84 years	20 of 100 (Routine)
31 March 1981	Big Hill Reservoir, AU	daily rain	27.3 mm (1.1 in)	1.9 mm (0.07 in)	22 years	17 of 100 (Routine)

Extremes by Year

1878 to 1986

Yearly extremes at Big Hill Reservoir: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	83.8 mm (3.3 in)	1897	42.6 mm (1.7 in)	98
Wettest five days (Rx5day)	190.4 mm (7.5 in)	1951	65.7 mm (2.6 in)	98
Longest dry spell (CDD)	71 days	1926	33 days	98

Wettest day (Rx1day)

The wettest day of the year at Big Hill Reservoir, 1878 to 1986. The record is 83.8 mm (3.3 in) in 1897, marked on the chart; the median year is 42.6 mm (1.7 in).

Wettest day (Rx1day) at Big Hill Reservoir by year
Year	Wettest day (Rx1day)
1878	0.0 mm (0.00 in)
1881	0.0 mm (0.00 in)
1890	0.0 mm (0.00 in)
1892	27.7 mm (1.1 in)
1893	34.8 mm (1.4 in)
1894	72.1 mm (2.8 in)
1895	41.9 mm (1.6 in)
1896	67.3 mm (2.6 in)
1897	83.8 mm (3.3 in)
1898	64.0 mm (2.5 in)
1899	48.3 mm (1.9 in)
1900	35.8 mm (1.4 in)
1901	29.5 mm (1.2 in)
1902	37.6 mm (1.5 in)
1903	43.2 mm (1.7 in)
1904	33.8 mm (1.3 in)
1905	21.8 mm (0.9 in)
1906	66.0 mm (2.6 in)
1907	51.1 mm (2.0 in)
1908	33.8 mm (1.3 in)
1909	48.3 mm (1.9 in)
1910	34.5 mm (1.4 in)
1911	69.6 mm (2.7 in)
1912	28.2 mm (1.1 in)
1913	60.2 mm (2.4 in)
1914	42.7 mm (1.7 in)
1915	52.3 mm (2.1 in)
1916	59.7 mm (2.4 in)
1917	35.3 mm (1.4 in)
1918	50.0 mm (2.0 in)
1919	56.1 mm (2.2 in)
1920	50.0 mm (2.0 in)
1921	71.1 mm (2.8 in)
1922	26.4 mm (1.0 in)
1923	47.0 mm (1.9 in)
1924	55.9 mm (2.2 in)
1925	26.7 mm (1.1 in)
1926	29.0 mm (1.1 in)
1927	19.6 mm (0.8 in)
1928	59.4 mm (2.3 in)
1929	46.0 mm (1.8 in)
1930	43.9 mm (1.7 in)
1931	57.7 mm (2.3 in)
1932	41.1 mm (1.6 in)
1933	72.6 mm (2.9 in)
1934	49.0 mm (1.9 in)
1935	31.5 mm (1.2 in)
1936	52.1 mm (2.1 in)
1937	24.1 mm (0.9 in)
1938	20.3 mm (0.8 in)
1939	44.5 mm (1.8 in)
1940	18.0 mm (0.7 in)
1941	38.4 mm (1.5 in)
1942	47.8 mm (1.9 in)
1943	37.1 mm (1.5 in)
1944	17.0 mm (0.7 in)
1945	55.6 mm (2.2 in)
1946	36.8 mm (1.4 in)
1947	32.3 mm (1.3 in)
1948	32.0 mm (1.3 in)
1949	61.2 mm (2.4 in)
1950	64.5 mm (2.5 in)
1951	64.0 mm (2.5 in)
1952	31.8 mm (1.3 in)
1953	39.6 mm (1.6 in)
1954	74.2 mm (2.9 in)
1955	66.3 mm (2.6 in)
1956	38.6 mm (1.5 in)
1957	36.3 mm (1.4 in)
1958	28.4 mm (1.1 in)
1959	42.2 mm (1.7 in)
1960	29.5 mm (1.2 in)
1961	45.7 mm (1.8 in)
1962	66.5 mm (2.6 in)
1963	35.1 mm (1.4 in)
1964	26.2 mm (1.0 in)
1965	42.7 mm (1.7 in)
1966	35.1 mm (1.4 in)
1967	20.3 mm (0.8 in)
1968	39.1 mm (1.5 in)
1969	45.7 mm (1.8 in)
1970	63.2 mm (2.5 in)
1971	42.4 mm (1.7 in)
1972	51.8 mm (2.0 in)
1973	63.0 mm (2.5 in)
1974	39.0 mm (1.5 in)
1975	56.4 mm (2.2 in)
1976	69.8 mm (2.7 in)
1977	44.3 mm (1.7 in)
1978	48.5 mm (1.9 in)
1979	60.2 mm (2.4 in)
1980	38.8 mm (1.5 in)
1981	27.3 mm (1.1 in)
1982	20.3 mm (0.8 in)
1983	36.7 mm (1.4 in)
1984	45.0 mm (1.8 in)
1985	49.2 mm (1.9 in)
1986	23.5 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Big Hill Reservoir, 1878 to 1986. The record is 190.4 mm (7.5 in) in 1951, marked on the chart; the median year is 65.7 mm (2.6 in).

Wettest five days (Rx5day) at Big Hill Reservoir by year
Year	Wettest five days (Rx5day)
1878	0.0 mm (0.00 in)
1881	0.0 mm (0.00 in)
1890	0.0 mm (0.00 in)
1892	42.9 mm (1.7 in)
1893	109.7 mm (4.3 in)
1894	95.8 mm (3.8 in)
1895	67.6 mm (2.7 in)
1896	74.2 mm (2.9 in)
1897	86.3 mm (3.4 in)
1898	84.3 mm (3.3 in)
1899	122.2 mm (4.8 in)
1900	55.9 mm (2.2 in)
1901	52.1 mm (2.1 in)
1902	71.7 mm (2.8 in)
1903	89.7 mm (3.5 in)
1904	60.7 mm (2.4 in)
1905	56.1 mm (2.2 in)
1906	77.4 mm (3.0 in)
1907	74.2 mm (2.9 in)
1908	44.2 mm (1.7 in)
1909	83.4 mm (3.3 in)
1910	70.5 mm (2.8 in)
1911	160.0 mm (6.3 in)
1912	52.5 mm (2.1 in)
1913	63.0 mm (2.5 in)
1914	43.0 mm (1.7 in)
1915	52.3 mm (2.1 in)
1916	119.1 mm (4.7 in)
1917	65.8 mm (2.6 in)
1918	105.6 mm (4.2 in)
1919	67.0 mm (2.6 in)
1920	80.2 mm (3.2 in)
1921	97.0 mm (3.8 in)
1922	43.9 mm (1.7 in)
1923	60.5 mm (2.4 in)
1924	64.0 mm (2.5 in)
1925	35.9 mm (1.4 in)
1926	33.1 mm (1.3 in)
1927	48.6 mm (1.9 in)
1928	130.2 mm (5.1 in)
1929	80.5 mm (3.2 in)
1930	89.0 mm (3.5 in)
1931	69.4 mm (2.7 in)
1932	73.1 mm (2.9 in)
1933	127.0 mm (5.0 in)
1934	65.5 mm (2.6 in)
1935	64.1 mm (2.5 in)
1936	65.9 mm (2.6 in)
1937	37.6 mm (1.5 in)
1938	29.2 mm (1.1 in)
1939	66.5 mm (2.6 in)
1940	28.4 mm (1.1 in)
1941	52.2 mm (2.1 in)
1942	62.8 mm (2.5 in)
1943	37.1 mm (1.5 in)
1944	34.2 mm (1.3 in)
1945	104.4 mm (4.1 in)
1946	58.1 mm (2.3 in)
1947	45.1 mm (1.8 in)
1948	45.2 mm (1.8 in)
1949	86.6 mm (3.4 in)
1950	89.6 mm (3.5 in)
1951	190.4 mm (7.5 in)
1952	42.7 mm (1.7 in)
1953	52.6 mm (2.1 in)
1954	90.0 mm (3.5 in)
1955	79.2 mm (3.1 in)
1956	61.2 mm (2.4 in)
1957	61.9 mm (2.4 in)
1958	60.2 mm (2.4 in)
1959	65.3 mm (2.6 in)
1960	64.1 mm (2.5 in)
1961	66.7 mm (2.6 in)
1962	85.1 mm (3.4 in)
1963	62.8 mm (2.5 in)
1964	58.1 mm (2.3 in)
1965	53.6 mm (2.1 in)
1966	70.7 mm (2.8 in)
1967	28.2 mm (1.1 in)
1968	64.2 mm (2.5 in)
1969	52.6 mm (2.1 in)
1970	86.6 mm (3.4 in)
1971	73.2 mm (2.9 in)
1972	103.1 mm (4.1 in)
1973	106.7 mm (4.2 in)
1974	85.3 mm (3.4 in)
1975	92.1 mm (3.6 in)
1976	77.2 mm (3.0 in)
1977	44.3 mm (1.7 in)
1978	54.3 mm (2.1 in)
1979	79.0 mm (3.1 in)
1980	74.5 mm (2.9 in)
1981	75.7 mm (3.0 in)
1982	31.2 mm (1.2 in)
1983	69.0 mm (2.7 in)
1984	61.5 mm (2.4 in)
1985	85.6 mm (3.4 in)
1986	45.0 mm (1.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Big Hill Reservoir, 1878 to 1986. The record is 71 days in 1926, marked on the chart; the median year is 33 days.

Longest dry spell (CDD) at Big Hill Reservoir by year
Year	Longest dry spell (CDD)
1878	31 days
1881	28 days
1890	28 days
1892	12 days
1893	69 days
1894	27 days
1895	42 days
1896	25 days
1897	27 days
1898	42 days
1899	35 days
1900	30 days
1901	33 days
1902	33 days
1903	23 days
1904	39 days
1905	33 days
1906	48 days
1907	31 days
1908	37 days
1909	32 days
1910	41 days
1911	34 days
1912	37 days
1913	35 days
1914	40 days
1915	31 days
1916	39 days
1917	22 days
1918	27 days
1919	40 days
1920	38 days
1921	21 days
1922	49 days
1923	47 days
1924	27 days
1925	38 days
1926	71 days
1927	35 days
1928	36 days
1929	29 days
1930	50 days
1931	43 days
1932	37 days
1933	36 days
1934	51 days
1935	26 days
1936	22 days
1937	50 days
1938	45 days
1939	25 days
1940	31 days
1941	22 days
1942	20 days
1943	32 days
1944	29 days
1945	36 days
1946	18 days
1947	34 days
1948	55 days
1949	28 days
1950	34 days
1951	35 days
1952	22 days
1953	56 days
1954	34 days
1955	33 days
1956	29 days
1957	24 days
1958	36 days
1959	25 days
1960	27 days
1961	38 days
1962	35 days
1963	25 days
1964	31 days
1965	52 days
1966	26 days
1967	65 days
1968	55 days
1969	29 days
1970	34 days
1971	23 days
1972	37 days
1973	16 days
1974	21 days
1975	39 days
1976	26 days
1977	28 days
1978	29 days
1979	27 days
1980	46 days
1981	18 days
1982	41 days
1983	36 days
1984	20 days
1985	24 days
1986	36 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

88 years, 1893 to 1985

A day with at least 43.7 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 84.3 mm (3.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Big Hill Reservoir: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	43.7 mm (1.7 in)
5 years	57.7 mm (2.3 in)
10 years	65.5 mm (2.6 in)
25 years	74.0 mm (2.9 in)
50 years	79.5 mm (3.1 in)
100 years	84.3 mm (3.3 in)	Longer than the 88 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 88 years of values from 1893 to 1985.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 83.8 mm (3.3 in) in 1897; 74.2 mm (2.9 in) in 1954; 72.6 mm (2.9 in) in 1933.

Download the Data

Data for Big Hill Reservoir standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Big Hill Reservoir threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a