HEART RIVER BASIN

06349000 HEART RIVER NEAR MANDAN, ND

LOCATION.--Lat 46×50'02", long 100×58'27", in NW14NE14 sec.25, T.139 N., R.82 W., Morton County, Hydrologic Unit 10130203, on left bank near downstream wingwall of bridge on county highway, 3 mi west of Mandan, and 4 mi downstream from Sweetbriar Creek.

DRAINAGE AREA.--3,310 mi2, approximately.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--April to September 1924, April 1928 to June 1933, August 1937 to current year. Published as "at Sunny" 1924, 1928-33.

REVISED RECORDS.--WSP 926: 1938. WSP 1209: Drainage area. WSP 1239: 1924, 1928-29, 1948.

GAGE.--Water-stage recorder. Datum of gage is 1,638.70 ft above National Geodetic Vertical Datum of 1929 and 1,623.03 ft above Burlington Northern Railway datum. See WSP 1729 or 1917 for history of changes prior to June 30, 1958.

REMARKS.--Records fair except for estimated daily discharges, which are poor. Flow regulated by Lake Tschida (station 06346000), 105 mi upstream, since 1949. Some diversions above station.

Discharge, cubic feet per second 

WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004

DAILY MEAN VALUES

DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP
1	22	24	e25	e13	e8.3	e208	1,080	142	45	26	12	30
2	22	25	e24	e13	e8.6	e490	955	137	42	49	9.8	29
3	21	23	e23	e12	e8.5	e511	e890	122	55	51	8.4	29
4	21	26	e23	e11	e8.4	e380	e800	109	63	51	14	36
5	21	33	e23	e11	e8.3	e340	e760	104	50	52	28	45
6	21	e31	e23	e10	e8.3	e309	e680	91	41	57	37	47
7	20	e30	e22	e9.6	e8.5	e318	e630	88	33	73	45	46
8	20	e29	e21	e9.2	e8.6	e375	e561	86	24	75	73	68
9	18	e29	e21	e8.8	e9.0	e518	539	85	24	81	72	53
10	18	e28	e20	e8.3	e9.1	e789	491	67	30	92	59	51
11	18	e28	e20	e7.9	e9.1	e1,280	452	62	38	83	58	55
12	17	e27	e18	e7.6	e9.1	e3,070	419	58	78	89	53	55
13	16	e27	e18	e7.3	e9.2	e4,730	388	56	137	70	42	58
14	17	e27	e17	e6.9	e9.4	e6,030	359	61	147	53	38	57
15	16	e30	e17	e7.5	e9.6	e4,900	331	56	201	14	36	59
16	17	e34	e18	e9.3	e9.8	e3,880	304	51	189	12	34	62
17	16	e37	e20	e9.8	e9.9	e3,160	279	51	182	4.1	33	64
18	18	e37	e21	e9.8	e10	e2,840	273	47	176	0.88	30	55
19	19	e36	e21	e9.8	e11	e2,630	266	44	143	12	21	41
20	19	e36	e21	e9.8	e11	e2,580	264	40	102	25	8.7	34
21	17	e34	e20	e9.1	e12	e2,520	258	39	83	18	7.0	28
22	17	e32	e20	e9.0	e13	e2,330	245	42	72	35	36	27
23	17	e32	e18	e9.0	e14	2,070	235	40	74	26	46	29
24	16	e30	e18	e9.0	e15	1,870	222	38	70	32	68	32
25	17	e29	e16	e9.0	e16	1,720	205	90	65	35	76	29
26	17	e28	e15	e8.6	e29	1,590	196	68	59	35	78	29
27	22	e27	e15	e8.2	e58	1,470	188	54	40	47	76	26
28	22	e26	e15	e8.2	e90	1,360	185	48	33	61	65	23
29	22	e26	e15	e8.2	e136	1,350	166	46	23	65	43	20
30	25	e25	e15	e8.3	---	1,420	149	47	24	55	36	20
31	26	---	e14	e8.2	---	1,280	---	46	---	30	34	---
TOTAL	595	886	597	286.4	566.7	58,318	12,770	2,115	2,343	1,408.98	1,276.9	1,237
MEAN	19.2	29.5	19.3	9.24	19.5	1,881	426	68.2	78.1	45.5	41.2	41.2
MAX	26	37	25	13	136	6,030	1,080	142	201	92	78	68
MIN	16	23	14	6.9	8.3	208	149	38	23	0.88	7.0	20
AC-FT	1,180	1,760	1,180	568	1,120	115,700	25,330	4,200	4,650	2,790	2,530	2,450
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1924 - 2004, BY WATER YEAR (WY)
MEAN	56.7	43.9	26.6	17.9	106	962	865	324	330	233	97.9	64.6
MAX	337	383	155	145	1,046	4,029	5,885	3,610	1,925	2,433	763	231
(WY)	(1995)	(1983)	(1983)	(1983)	(1930)	(1997)	(1950)	(1970)	(1941)	(1993)	(1998)	(1995)
MIN	5.41	6.95	0.21	0.00	0.00	0.28	25.2	18.5	23.4	11.3	3.65	1.43
(WY)	(1940)	(1938)	(1938)	(1938)	(1940)	(1965)	(1990)	(1992)	(1961)	(1990)	(1932)	(1932)

SUMMARY STATISTICS	FOR 2003 CALENDAR YEAR	FOR 2004 WATER YEAR	WATER YEARS 1924 - 2004
ANNUAL TOTAL	54,711.7	82,399.98
ANNUAL MEAN	150	225	262
HIGHEST ANNUAL MEAN			898 1982
LOWEST ANNUAL MEAN			19.2 1990
HIGHEST DAILY MEAN	5,000 Mar 22	6,030 Mar 14	28,400 Apr 18, 1950
LOWEST DAILY MEAN	5.8 Jul  4	0.88 Jul 18	0.00 Aug 20, 1929
ANNUAL SEVEN-DAY MINIMUM	9.3 Feb 23	7.8 Jan  9	0.00 Feb  1, 1930
MAXIMUM PEAK FLOW		a,b6,100 Mar 14	a,c30,500 Apr 19, 1950
MAXIMUM PEAK STAGE		d13.84 Mar 13	d25.75 Apr  4, 1952
ANNUAL RUNOFF (AC-FT)	108,500	163,400	190,200
10 PERCENT EXCEEDS	253	429	416
50 PERCENT EXCEEDS	33	33	50
90 PERCENT EXCEEDS	13	9.2	6.0

a About b Gage height, 13.68 ft c Gage height, 23.64 ft d Backwater from ice e Estimated

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