ANDROSCOGGIN RIVER BASIN
01054000 ANDROSCOGGIN RIVER NEAR GORHAM, NH
LOCATION.--Lat 44°26'10", long 71°11'27", Coos County, Hydrologic Unit 01040001, on right bank at Pulsifer Rips, 2.2 mi
downstream from Dead River, and 4.0 mi upstream from Gorham.
DRAINAGE AREA.--1,361 mi².
PERIOD OF RECORD.--Discharge records: October 1913 to current year. October 1922 to September 1928, monthly discharge
only, published in WSP 1301. Discharges for water year 1918 not used in long-term statistics because of unknown
discharge on December 25, 1917. Prior to October 1928, published as "at Berlin."
REVISED RECORDS.--WDR ME-81-l: Drainage area.
GAGE.--Water-stage recorder. Datum of gage is 832.88 ft above sea level. Prior to September 30, 1922, nonrecording
gage showing head and tailwater elevations at site 3 mi upstream at different datum.
REMARKS.--No estimated daily discharges. Records fair. Flow regulated by Rangeley, Mooselookmeguntic, Richardson,
Aziscohos, and Umbagog Lakes. These reservoirs have a combined usable capacity of about 28.1 billion ft³ with
final regulation at Errol Dam 35 mi upstream. Diurnal fluctuations caused by powerplant 0.8 mi upstream.
Satellite gage-height telemeter at station.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 21,900 ft³/s, estimated, April 30, 1923; minimum daily
discharge,leakage only, December 25, 1917, when gates in dam were closed.
EXTREMES FOR CURRENT YEAR.--Maximum discharge, 8,280 ft³/s, April 19, gage height, 6.87 ft; minimum daily discharge,
1,640 ft³/s, October 18-19.
REVISIONS.--The maximum discharges for water years 1913 to 1928 have been estimated as shown in the following table.
These values supersede those published for those years.
Discharge Discharge Discharge Discharge Discharge
Date (ft³/s) Date (ft³/s) Date (ft³/s) Date (ft³/s) Date (ft³/s)
Mar. 28, 1913 13,200 June 18, 1917 21,800 Apr. 24, 1920 6,090 Apr. 30, 1923 21,900 May 4, 1926 12,000
May 10, 1914 16,700 Oct. 31, 1817 7,120 Mar. 28, 1921 8,320 May 14, 1924 7,540 Apr. 23, 1927 7,160
July 9, 1915 5,530 May 22, 1919 10,800 Apr. 18, 1922 10,000 Mar. 29, 1925 6,560 May 25, 1928 14,200
June 11, 1916 9,500
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 1940 2130 1870 2340 2570 2890 3200 4870 3760 2150 2000 2340
2 1900 2340 4020 2420 2570 3000 3010 6580 3550 2040 2000 2400
3 1790 1950 4800 2470 2550 3280 2920 6690 3280 2230 1940 2340
4 1680 1850 3760 2460 2510 3310 2910 6800 3000 3290 1930 2220
5 1690 1950 3720 2520 2550 3120 3010 5930 2800 3340 1910 2000
6 1650 1930 3470 2620 2560 3080 3490 4580 2320 2950 1910 2380
7 1660 1840 3230 2590 2660 3160 4520 4780 2260 2840 1700 2400
8 1790 1900 2780 2400 2620 3720 5210 4200 2250 2160 1650 2350
9 1960 2640 2720 2480 2590 4070 4180 3930 2260 2140 1690 2320
10 2070 3310 2510 2500 2650 4070 3570 3850 2430 2840 1750 2370
11 2170 2470 2300 2470 2620 3670 3620 3880 1950 2960 1750 2440
12 2000 2210 2170 2430 2640 3500 3530 3660 1950 2600 1810 2460
13 1940 2110 2390 2410 2620 3390 3420 3270 2250 2140 2000 2420
14 1850 2050 2370 2470 2550 3330 3300 3310 2270 2310 2680 2350
15 1760 2000 2370 2480 2660 3570 3040 3300 2330 2620 2070 2320
16 1700 1940 2370 2520 2620 3460 3040 3510 2140 2510 1860 2350
17 1650 1900 2380 2340 2510 3410 3380 4140 1930 2230 2000 2400
18 1640 1860 2620 2310 2620 3410 4530 3920 1900 2080 2040 2450
19 1640 1850 2870 2330 2690 3380 7840 3720 2690 2300 1980 2150
20 1700 1850 2610 2430 2860 3370 6400 4060 2810 2370 1870 2010
21 2310 1870 2200 2560 2870 3310 5200 4290 2320 2410 1890 2060
22 5010 1950 2530 2580 2710 2950 4500 4320 3670 2180 2140 2120
23 3510 2020 2520 2700 3080 2840 4210 4420 5180 2080 2100 2090
24 2580 2030 2670 2640 3200 2890 4340 4410 5170 1700 2180 2040
25 2010 1990 3430 2650 2960 2860 3940 4260 5000 2150 2100 2040
26 1860 1910 3160 2630 2810 2940 4250 4180 4680 2130 1960 2050
27 1730 1740 2900 2530 2780 2840 4800 4010 3830 2190 1940 2130
28 1730 1700 2720 2560 2850 2540 4870 4000 3050 2160 2440 2090
29 1730 1680 2680 2530 --- 2680 5120 3940 2870 1930 2680 2120
30 1750 1740 2720 2480 --- 3270 4540 3710 2590 1800 2750 2140
31 2040 --- 2240 2530 --- 3430 --- 3870 --- 1730 2120 ---
TOTAL 62440 60710 87100 77380 75480 100740 123890 134390 88490 72560 62840 67350
MEAN 2014 2024 2810 2496 2696 3250 4130 4335 2950 2341 2027 2245
MAX 5010 3310 4800 2700 3200 4070 7840 6800 5180 3340 2750 2460
MIN 1640 1680 1870 2310 2510 2540 2910 3270 1900 1700 1650 2000
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1914 - 1997, BY WATER YEAR (WY)
MEAN 2055 2101 2149 2149 2160 2485 3895 4303 2800 2078 1936 1979
MAX 4894 4292 5811 4044 4294 7684 6474 10050 10560 5840 2792 6387
(WY) 1955 1991 1974 1970 1996 1936 1976 1937 1917 1996 1990 1954
MIN 1374 1413 1257 1276 1299 1376 1755 1746 1545 1524 1462 1330
(WY) 1942 1922 1953 1953 1922 1922 1965 1941 1915 1980 1995 1995
SUMMARY STATISTICS FOR 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1914 - 1997
ANNUAL TOTAL 1444860 1013370
ANNUAL MEAN 3948 2776 2513
HIGHEST ANNUAL MEAN 4147 1996
LOWEST ANNUAL MEAN 1689 1965
HIGHEST DAILY MEAN 15400 Apr 24 7840 Apr 19 20000 Jun 18 1917
LOWEST DAILY MEAN 1610 Aug 26 1640 Oct 18 795 Mar 15 1948
ANNUAL SEVEN-DAY MINIMUM 1710 Oct 14 1710 Oct 14 866 Mar 10 1948
INSTANTANEOUS PEAK FLOW 8280 Apr 19 21900 Apr 30 1923
INSTANTANEOUS PEAK STAGE 6.87 Apr 19
10 PERCENT EXCEEDS 8110 4100 3720
50 PERCENT EXCEEDS 2910 2520 2010
90 PERCENT EXCEEDS 1870 1860 1600
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