RED RIVER OF THE NORTH BASIN

05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND

LOCATION.--Lat 48×51'55", long 98×00'20", in SE14SW14 sec.10, T.162 N., R.57 W., Cavalier County, Hydrologic Unit 09020313, on right bank 10 ft upstream from county bridge, 3.5 mi above mouth, and 6 mi southwest of Walhalla.

DRAINAGE AREA.--182 mi2, of which 10 mi2 is noncontributing.

WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--April 1956 to Sept. 1982, March 2001 to current year.

REVISED RECORDS.--WSP 1728: Drainage area.

GAGE.--Water-stage recorder. Datum of gage is 1,101.04 ft above National Geodetic Vertical Datum of 1929 (levels by North Dakota State Water Commission). From March 2001 to September 2002, at datum 80.00 ft lower and prior to March 2001, at datum 1.56 ft lower. Prior to September 10, 1956, nonrecording gage at bridge 25 ft downstream at datum 1.56 ft lower.

REMARKS.--Records fair except for discharges during Mar. 31 to Apr. 14 and for estimated daily discharges, which are poor.

EXTREMES OUTSIDE PERIOD OF RECORD.--A discharge of 5,080 ft3/s, gage height, unknown, was measured on Apr. 24, 1997. A high-water mark 3 ft higher than gage height of measurement was observed.

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	1.4	1.9	e0.48	e0.58	e0.00	e0.00	1,360	e43	356	34	6.3	6.8
2	1.6	e1.7	e0.45	e0.54	e0.00	e0.00	900	e36	216	36	6.7	6.5
3	1.5	e1.3	e0.44	e0.50	e0.00	e0.00	636	33	163	37	6.1	6.4
4	1.6	e0.97	e0.44	e0.48	e0.00	e0.00	491	33	134	39	5.7	7.2
5	1.5	e0.67	e0.44	e0.46	e0.00	e0.00	457	32	119	31	5.5	6.9
6	1.6	e0.66	e0.44	e0.44	e0.00	e0.00	475	31	103	27	7.6	7.0
7	1.5	e0.66	e0.43	e0.43	e0.00	e0.00	802	29	246	22	52	6.3
8	1.6	e0.70	e0.43	e0.42	e0.00	e0.00	733	28	291	21	44	5.8
9	1.6	e0.73	e0.42	e0.42	e0.00	e0.00	417	28	189	24	40	5.4
10	1.7	e0.76	e0.39	e0.42	e0.00	e0.00	333	27	147	24	30	5.1
11	1.8	e0.80	e0.34	e0.42	e0.00	e0.00	288	37	122	21	24	4.8
12	1.7	e0.92	e0.28	e0.42	e0.00	e0.00	235	66	106	20	20	4.6
13	1.7	e0.83	e0.31	e0.42	e0.00	e0.00	195	96	90	20	17	4.8
14	2.0	e0.85	e0.36	e0.41	e0.00	e0.00	162	180	78	19	15	5.3
15	1.7	e0.76	e0.42	e0.40	e0.00	e0.02	139	319	70	18	12	4.4
16	2.0	e0.77	e0.44	e0.38	e0.00	e0.04	130	507	63	16	11	3.7
17	2.0	e0.94	e0.45	e0.36	e0.00	e0.06	123	233	55	16	10	3.8
18	1.9	e0.88	e0.47	e0.34	e0.00	e0.08	126	166	48	15	9.7	4.2
19	1.6	e0.80	e0.49	e0.32	e0.00	e0.10	114	146	41	14	8.4	3.7
20	1.6	e0.75	e0.55	e0.30	e0.00	e0.15	108	138	36	13	7.4	7.8
21	2.0	e0.68	e0.62	e0.22	e0.00	e0.25	106	114	33	13	6.2	39
22	1.6	e0.65	e0.64	e0.17	e0.00	e0.50	95	99	30	13	5.8	28
23	2.1	e0.60	e0.56	e0.15	e0.00	e0.75	91	85	28	12	5.0	18
24	1.8	e0.56	e0.60	e0.14	e0.00	e1.5	85	77	26	9.4	12	45
25	1.9	e0.53	e0.63	e0.13	e0.00	e5.0	85	86	24	8.5	14	57
26	1.9	e0.52	e0.64	e0.11	e0.00	e10	83	79	43	7.6	15	34
27	2.2	e0.57	e0.64	e0.10	e0.00	e50	79	71	55	6.6	12	22
28	2.5	e0.48	e0.65	e0.05	e0.00	e700	75	64	48	7.1	9.8	15
29	2.3	e0.47	e0.63	e0.02	e0.00	e950	e65	62	42	7.8	9.4	12
30	2.1	e0.52	e0.62	e0.00	---	885	e55	88	39	7.7	8.0	11
31	2.0	---	e0.61	e0.00	---	1,220	---	376	---	7.2	7.6	---
TOTAL	56.0	23.93	15.31	9.55	0.00	3,823.45	9,043	3,409	3,041	566.9	443.2	391.5
MEAN	1.81	0.80	0.49	0.31	0.00	123	301	110	101	18.3	14.3	13.1
MAX	2.5	1.9	0.65	0.58	0.00	1,220	1,360	507	356	39	52	57
MIN	1.4	0.47	0.28	0.00	0.00	0.00	55	27	24	6.6	5.0	3.7
AC-FT	111	47	30	19	0.00	7,580	17,940	6,760	6,030	1,120	879	777
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1956 - 2004, BY WATER YEAR (WY)
MEAN	1.73	1.28	0.66	0.39	1.33	25.1	178	43.4	25.0	9.66	4.10	3.47
MAX	5.45	3.94	2.22	1.09	30.1	139	461	255	162	62.6	23.1	20.7
(WY)	(1981)	(1971)	(2003)	(2003)	(1981)	(1966)	(1970)	(1974)	(2002)	(1970)	(2002)	(2002)
MIN	0.18	0.18	0.05	0.00	0.00	0.00	4.92	2.34	0.44	0.18	0.01	0.09
(WY)	(1962)	(1962)	(1977)	(1973)	(1961)	(1962)	(1973)	(1958)	(1958)	(1961)	(1961)	(1961)

SUMMARY STATISTICS	FOR 2003 CALENDAR YEAR	FOR 2004 WATER YEAR	WATER YEARS 1956 - 2004d
ANNUAL TOTAL	4,172.15	20,822.84
ANNUAL MEAN	11.4	56.9	22.6
HIGHEST ANNUAL MEAN			63.2 1974
LOWEST ANNUAL MEAN			1.78 1958
HIGHEST DAILY MEAN	227 Apr  8	1,360 Apr  1	3,260 Apr 10, 1969
LOWEST DAILY MEAN	0.02 Mar 26	0.00 Jan 30	0.00 Jan  4, 1958
ANNUAL SEVEN-DAY MINIMUM	0.03 Mar 22	0.00 Jan 30	0.00 Jan  4, 1958
MAXIMUM PEAK FLOW		a2,010 Mar 31	6,600 Apr 25, 1970
MAXIMUM PEAK STAGE		b8.68 Mar 28	c13.95 Apr 25, 1970
ANNUAL RUNOFF (AC-FT)	8,280	41,300	16,360
10 PERCENT EXCEEDS	29	127	28
50 PERCENT EXCEEDS	1.4	4.8	1.0
90 PERCENT EXCEEDS	0.06	0.00	0.12

a Gage height, 7.15 ft b Backwater from ice c Site and datum then in use d Complete water years only e Estimated

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