05586100 DATA: Sediment Tables, 2005

Station list Available data
ILLINOIS RIVER BASIN

05586100 ILLINOIS RIVER AT VALLEY CITY, IL


LOCATION.-- Lat 39°42'12", long 90°38'43" (NAD of 1927), in SE1/4NW1/4 sec.34, T.15 N., R.14 W., Scott County, Hydrologic Unit 07130011, on upstream side of Norfolk & Southern Corporation Railroad bridge at Flints Creek, 0.4 mi east of Valley City, 1.8 mi downstream from Mauvaise Terre Creek, and at mile 61.3. Auxiliary gage 10.0 miles upstream.

DRAINAGE AREA.-- 26,743 mi², does not include diversion from Lake Michigan through the Chicago Sanitary and Ship Canal, which has occurred since Jan. 17, 1900.

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: October 1938 to current year. Prior to October 1960, at site 0.2 mi upstream at same datum. Prior to October 1989, published as "at Meredosia." Records are considered equivalent.
	STAGE: Water years 1994 to current year.
	PARTIAL RECORD: Annual maximum, water years 1921 to 1938.
SURFACE-WATER QUALITY
	CHEMICAL: Water years 1975-93 and 1996 to current year.
	DISSOLVED OXYGEN: Water years 2001-2003. PH: Water years 2001-2003.
	SEDIMENT: February 1980 to current year
	SPECIFIC CONDUCTANCE: Water years 1975-81, 2001-2003.
	TURBIDITY: Water years 2001-2003.
	WATER TEMPERATURE: Water years 1975-81, 2001-2003.
	MISCELLANEOUS: Contaminants in streambed sediments, October 1996; contaminants in fish tissue, October 1996; sediment concentration and particle size, water years 1996-2005.
BIOLOGICAL
	ALGAE: Water years 1980-81, 1996-98, and 2002 to current year.
	BENTHIC MACROINVERTEBRATES: Water years 1997-98, 2002 to current year.
	FISH: Water year 1998, 2003 to current year.
	HABITAT: Water years 1997-98, 2003, 2005.

GAGE.-- U.S. Army Corps of Engineer's water-stage recorder and satellite telemeter, and crest-stage gage. Datum of gage is 418.00 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers) (417.65 ft NAVD 1988). Prior to Nov. 25, 1992 and Oct. 1, 1994 to current; auxiliary gage (05585500) at site 10.0 mi upstream. Nov. 25, 1992 to Sept. 30, 1994; auxiliary gage operated at this site (05586100).

REMARKS.-- Occasional regulation at low flow by navigation dam at La Grange. Since Jan. 17, 1900, flow has included diversion from Lake Michigan through Chicago Sanitary and Ship Canal. Suspended-sediment samples were collected by local observers generally twice weekly with additional samples collected during high runoff periods. Since February 1994, samples used to compute sediment record have been collected at upstream side Rt. 106 bridge at Florence at mile 56.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 123,000 ft³/s, May 26-28, 1943; maximum gage height, 28.61 ft, May 26, 1943; minimum daily discharge, 1,330 ft³/s, Sept. 2, 1984.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 3,720 mg/L, Apr. 14, 1981; minimum daily, 14 mg/L, Dec. 26, 1984, July 21, 1993.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 410,000 tons, June 4, 1980; minimum daily, 172 tons, Sept. 2, 1984.

EXTREMES FOR CURRENT YEAR.--
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily, 749 mg/L, Jan. 5; minimum daily, 21 mg/L, Aug. 28, Sept. 10-11.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 143,000 tons, Jan. 18; minimum daily, 225 tons, June 28.

SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 2004 TO SEPTEMBER 2005
		MEAN			MEAN			MEAN
	MEAN	CONCEN-	SEDIMENT	MEAN	CONCEN-	SEDIMENT	MEAN	CONCEN-	SEDIMENT
	DISCHARGE	TRATION	DISCHARGE	DISCHARGE	TRATION	DISCHARGE	DISCHARGE	TRATION	DISCHARGE
DAY	(CFS)	(MG/L)	(TONS/DAY)	(CFS)	(MG/L)	(TONS/DAY)	(CFS)	(MG/L)	(TONS/DAY)

	OCTOBER			NOVEMBER			DECEMBER

1	4480	37	374	17400	359	18300	38000	285	29300
2	4150	37	410	25500	648	44600	40100	243	26300
3	4680	36	458	26300	524	37100	41800	201	22700
4	4520	36	442	28600	484	37400	42900	179	20700
5	4870	38	498	31800	464	39700	43700	180	21200

6	4570	46	570	33800	445	40500	45500	251	30800
7	4630	55	688	35400	423	40400	47800	344	44300
8	4660	62	782	35500	395	37800	49800	431	57800
9	4220	65	737	34200	365	33700	51200	373	51600
10	4730	67	856	33000	336	29900	53100	307	44000

11	4860	69	906	31700	307	26300	55200	240	35700
12	5090	70	966	30400	278	22800	56400	181	27600
13	5110	69	948	28900	248	19400	56600	151	23100
14	5150	67	924	25900	219	15300	56800	138	21200
15	5360	65	935	e21500	194	11400	56500	128	19500

16	5010	63	847	17800	180	8540	55600	117	17600
17	4260	61	698	13900	167	6480	54500	107	15700
18	5310	59	840	12700	153	5160	53400	96	13900
19	6240	57	955	11700	140	4420	52100	86	12100
20	5890	55	871	11600	127	3940	50300	75	10200

21	6210	52	871	11300	113	3460	48100	67	8720
22	6380	49	850	12100	100	3270	45800	66	8130
23	5130	47	648	13100	93	3320	43100	65	7500
24	5360	68	1060	e14300	105	4040	40400	63	6920
25	10700	120	3490	17200	118	5460	e36500	62	6180

26	12200	144	4750	18900	132	6730	e34000	61	5650
27	13700	183	6820	e22200	231	13800	e31000	60	5070
28	15800	255	10900	27700	363	26900	e28000	59	4500
29	16400	260	11500	32400	317	27700	e26000	58	4070
30	14500	259	10100	35700	296	28500	e24000	55	3610

31	13000	258	9020	---	---	---	21900	73	4220

TOTAL	217170	---	74714	712500	---	606320	1380100	---	609870


	JANUARY			FEBRUARY			MARCH

1	21000	231	13100	58300	52	8110	46800	56	7130
2	22700	408	25100	55600	52	7770	45700	54	6680
3	25300	541	37200	52800	52	7410	44600	50	6040
4	32200	669	58400	50200	52	7080	43500	53	6230
5	37900	749	76600	48000	53	6820	42400	57	6550

6	40900	650	71800	46100	53	6560	41200	61	6790
7	44000	487	57700	44300	53	6340	40100	64	6950
8	47400	320	40900	42900	54	6190	38900	67	7070
9	49600	181	24200	42200	54	6170	37900	70	7140
10	51700	147	20600	41900	55	6180	36700	72	7150

11	53600	136	19600	41600	55	6190	35300	75	7140
12	55500	134	20100	41600	56	6250	34500	77	7200
13	60500	167	27300	42500	140	16200	33500	80	7250
14	66500	294	53000	44900	317	38500	32400	82	7180
15	70300	277	52600	46500	386	48500	31300	83	7020

16	77400	314	65700	47500	206	26500	30600	84	6920
17	84600	523	120000	48900	168	22200	29700	85	6800
18	89400	595	143000	49500	137	18300	28900	86	6660
19	91400	277	68300	50100	105	14200	27900	86	6510
20	92600	189	47100	51000	79	10800	26600	87	6270

21	92600	131	32800	51400	71	9810	25100	93	6300
22	91300	119	29300	51900	64	9000	23500	113	7160
23	88600	112	26900	51900	65	9190	e21500	129	7520
24	86600	105	24700	51500	64	8940	20100	128	6960
25	83000	97	21800	50800	63	8600	19600	125	6600

26	79400	89	19100	49900	61	8230	19500	122	6430
27	75700	79	16100	48800	60	7850	20300	119	6530
28	71900	69	13400	48000	58	7520	22800	116	7150
29	68200	59	10900	---	---	---	24500	117	7760
30	64700	52	9020	---	---	---	24700	128	8550

31	61400	51	8500	---	---	---	24000	140	9070

TOTAL	1977900	---	1254820	1350600	---	345410	974100	---	216710


	APRIL			MAY			JUNE

1	24100	152	9940	20200	118	6450	9910	62	1650
2	25500	164	11300	19600	105	5570	8930	60	1440
3	26200	182	12900	19000	91	4660	8670	58	1350
4	26600	189	13600	18700	76	3830	8800	56	1330
5	26600	146	10500	17600	64	3060	7950	54	1150

6	26400	142	10100	16200	62	2700	7820	53	1120
7	26000	142	9970	14800	60	2410	8520	52	1200
8	24500	141	9330	14100	59	2230	8860	43	1040
9	e22000	140	8380	14000	57	2130	8440	37	836
10	20500	161	8920	13100	55	1930	9190	37	923

11	19800	239	12800	13300	54	1930	9180	38	946
12	20500	321	17800	14000	57	2150	9080	40	971
13	25200	415	28600	15300	60	2480	9410	42	1070
14	25000	484	32600	14600	63	2510	9580	44	1150
15	24600	383	25500	13700	67	2480	9080	47	1150

16	23000	271	16900	14200	70	2680	9350	50	1260
17	21900	180	10700	14000	73	2780	10300	55	1520
18	21200	150	8600	13100	77	2720	11000	59	1770
19	e20600	129	7200	12100	80	2610	10600	63	1800
20	20200	116	6350	11800	83	2650	8860	59	1410

21	20000	153	8260	14100	86	3290	7940	54	1170
22	19900	278	14900	15700	90	3820	6940	50	932
23	22600	408	25000	15400	95	3980	5770	45	703
24	24400	498	32900	15300	97	3990	4840	40	529
25	25100	421	28500	15400	85	3540	4370	36	425

26	24200	279	18300	14400	72	2810	4100	32	357
27	22700	190	11700	12200	63	2060	3620	31	305
28	22100	125	7460	10900	62	1830	2750	30	225
29	e21400	121	7030	10700	62	1790	3150	30	251
30	20300	122	6710	10300	62	1730	3940	29	310

31	---	---	---	10300	62	1720	---	---	---

TOTAL	693100	---	432750	448100	---	90520	230950	---	30293


	JULY			AUGUST			SEPTEMBER

1	3040	30	243	e8200	55	1240	5810	26	405
2	3290	30	267	e5200	56	817	5760	27	418
3	4020	31	332	4050	56	630	5800	28	440
4	3300	31	276	3900	79	840	5880	29	455
5	3370	30	274	3750	90	917	6040	27	447

6	3860	30	307	3820	61	623	5810	26	411
7	4160	29	324	4320	38	444	5860	25	394
8	4020	28	305	3960	36	384	5920	24	376
9	3830	28	285	4550	36	442	5750	22	346
10	4150	28	309	4850	36	471	6010	21	341

11	3230	30	259	4760	36	462	6130	21	346
12	3260	32	281	4750	36	461	6230	24	409
13	3770	34	345	4620	36	449	6260	28	473
14	3380	36	329	4940	36	480	5940	31	501
15	3020	38	311	6110	36	589	5220	35	488

16	3070	40	333	6540	35	619	6010	36	577
17	2880	42	321	6540	34	603	6160	36	598
18	3100	41	339	6520	33	587	6700	37	667
19	3010	40	325	6580	32	578	7710	37	772
20	3630	39	379	6530	32	559	6260	38	638

21	3820	38	391	6620	31	547	5210	38	538
22	3590	37	358	7830	29	618	6170	39	647
23	3940	36	380	9500	28	714	6840	39	727
24	4300	36	416	9650	26	689	7960	40	859
25	4740	38	491	8890	25	600	8880	41	972

26	4010	41	446	7700	24	491	7110	41	788
27	4020	44	480	5760	22	344	6320	41	699
28	e7000	47	873	5770	21	332	6130	41	678
29	e11000	50	1440	5920	22	358	5980	41	662
30	e10500	53	1500	5510	24	350	7000	41	640

31	e9600	55	1430	5570	25	371	---	---	---

TOTAL	135910	---	14349	183210	---	17609	188860	---	16712

YEAR	8492500		3710077