07020500 DATA: Sediment Tables, 2002

Station list Available data
LOWER MISSISSIPPI RIVER BASIN

07020500 MISSISSIPPI RIVER AT CHESTER, IL


LOCATION.-- Lat 37°54'10", long 89°50'10" (NAD of 1927), in SW 1/4 sec.24, T.7 S., R.7 W., third principal meridian, Randolph County, Hydrologic Unit 07140105, on downstream side of left pier of main truss of highway bridge at Chester, 8.1 mi downstream from Kaskaskia River, and at mile 109.9 above Ohio River.

DRAINAGE AREA.-- 708,600 mi², approximately.

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE
	DISCHARGE: October 1927 to current year in reports of the U.S. Geological Survey. Monthly discharge only for some periods, published in WSP 1311. Since August 1873, results of discharge measurements in reports of the Mississippi River Commission.
	STAGE: July 1942 to current year in reports of the U.S. Geological Survey. Since May 1891, in reports of the Mississippi River Commission and National Weather Service.
SURFACE-WATER QUALITY
	SEDIMENT: August 1980 to current year.

REVISED RECORDS.-- WDR MO-76-1: Drainage area. WDR MO-98-1: Extreme outside period of record.

GAGE.-- Water-stage recorder and U.S. Army Corps of Engineers satellite telemeter. Datum of gage is 341.05 ft above NGVD of 1929. Prior to Feb. 1, 1962, nonrecording gage 0.4 mi downstream at present datum.

REMARKS.-- Natural flow of stream affected by many reservoirs and navigation dams in upper Mississippi River Basin and by many reservoirs and diversions for irrigation in Missouri River Basin. Sediment record computed from transport curves.

EXTREMES FOR PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 1,000,000 ft³/s, August 7, 1993, gage height, 49.74 ft; minimum discharge, 30,000 ft³/s, December 12, 1937.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 3,380 mg/L, Apr. 13, 1987; minimum daily mean, 13 mg/L, Mar. 18, 1981.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 3,330,000 tons, Feb. 25, 1997; minimum daily, 3,580 tons, Mar. 18, 1981.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Flood of June 30, 1844, reached a gage height of 39.8 ft, discharge, 1,050,000 ft³/s, computed by the U.S. Army Corps of Engineers.

EXTREMES FOR CURRENT YEAR.--
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 973 mg/L, May 10; minimum daily mean, 76 mg/L, Jan. 23 and 30.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 1,450,000 tons, May 10; minimum daily, 17,500 tons, Jan. 23.

SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 2001 TO SEPTEMBER 2002
		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	134000	191	69300	143000	171	66200	149000	142	57000
2	127000	188	64800	137000	158	58300	149000	140	56400
3	118000	176	56200	135000	149	54100	149000	132	53000
4	106000	163	46900	136000	145	53500	150000	124	50100
5	99400	153	41200	137000	143	52800	151000	117	47700

6	104000	151	42600	139000	141	52800	148000	110	44000
7	103000	151	42200	138000	141	52600	140000	105	39700
8	107000	155	45100	133000	138	49200	132000	103	37000
9	112000	159	48300	125000	130	43700	128000	102	35200
10	115000	163	50700	126000	128	43500	125000	101	34100

11	113000	159	48500	128000	129	44500	128000	105	36300
12	116000	159	49700	125000	124	41800	135000	109	39600
13	132000	175	62300	121000	119	38700	144000	114	44300
14	139000	188	70500	118000	114	36100	147000	121	47800
15	141000	190	72300	114000	114	34900	155000	127	53000

16	139000	181	68300	111000	113	33900	162000	143	62900
17	139000	174	65200	110000	110	32500	199000	323	175000
18	140000	169	64200	108000	106	30900	223000	328	198000
19	147000	166	65700	104000	106	29600	218000	278	164000
20	151000	165	67300	104000	110	30800	205000	246	136000

21	157000	176	74700	102000	113	31200	190000	220	113000
22	153000	170	69500	103000	109	30300	175000	198	93400
23	138000	165	61600	99200	105	28200	173000	202	94400
24	147000	201	79800	96300	111	28700	169000	197	90200
25	168000	280	127000	112000	148	45000	153000	177	73200

26	179000	282	136000	123000	157	52100	133000	149	53700
27	167000	254	115000	118000	130	41700	129000	140	48700
28	154000	211	88100	118000	118	37700	118000	136	43600
29	157000	210	89100	121000	116	37800	99400	119	32100
30	150000	190	77400	136000	125	45900	90300	105	25500

31	145000	174	68000	---	---	---	86900	96	22400


	JANUARY			FEBRUARY			MARCH

1	95000	111	28400	193000	255	140000	154000	175	72700
2	94400	116	29800	270000	523	381000	159000	190	81700
3	88900	105	25200	271000	471	346000	164000	200	88400
4	86500	93	21800	244000	393	259000	166000	185	83000
5	86400	82	19200	210000	331	188000	159000	168	71900

6	91500	81	19800	188000	277	140000	142000	151	57800
7	93500	82	20600	171000	233	107000	130000	140	49000
8	92500	82	20600	159000	196	83900	137000	160	59100
9	93700	83	21100	147000	167	66400	157000	324	140000
10	102000	84	23100	143000	158	61300	180000	509	247000

11	104000	85	23700	144000	151	58700	188000	424	214000
12	100000	85	23100	141000	143	54400	199000	365	195000
13	103000	86	23900	140000	134	50700	195000	345	181000
14	104000	85	23800	139000	126	47200	186000	327	165000
15	105000	85	24000	143000	124	47600	183000	316	156000

16	101000	84	22900	144000	133	51800	191000	321	166000
17	96800	82	21400	139000	140	52300	194000	322	169000
18	98100	79	20900	132000	137	48800	190000	308	158000
19	93500	77	19400	132000	134	47800	190000	293	150000
20	94200	79	20000	134000	131	47600	200000	277	150000

21	93100	81	20300	131000	128	45200	196000	251	133000
22	89900	78	19100	129000	130	45400	192000	225	116000
23	85100	76	17500	142000	142	54800	189000	199	102000
24	85000	107	24700	153000	156	64600	181000	178	87300
25	91400	118	29200	163000	178	78600	190000	197	101000

26	89500	100	24100	170000	189	86700	205000	222	123000
27	87000	90	21100	162000	170	74300	198000	203	108000
28	87100	84	19700	152000	160	65700	191000	182	93500
29	88000	78	18500	---	---	---	192000	175	90900
30	94600	76	19300	---	---	---	196000	175	92600

31	110000	100	30200	---	---	---	188000	165	83800


	APRIL			MAY			JUNE

1	177000	144	69000	413000	646	721000	391000	327	345000
2	164000	124	55000	418000	626	707000	356000	295	283000
3	161000	123	53500	411000	541	600000	338000	276	252000
4	164000	131	57900	399000	468	503000	332000	261	235000
5	165000	131	58600	387000	417	436000	324000	246	215000

6	165000	128	57300	370000	367	368000	313000	231	195000
7	166000	125	56100	370000	344	344000	312000	219	185000
8	173000	206	96800	417000	487	554000	323000	245	214000
9	182000	214	105000	495000	819	1100000	332000	281	253000
10	199000	210	113000	554000	973	1450000	343000	326	302000

11	223000	229	138000	592000	803	1280000	354000	437	418000
12	231000	258	160000	616000	688	1140000	378000	547	559000
13	226000	262	160000	655000	652	1150000	399000	601	647000
14	222000	250	150000	678000	625	1150000	424000	649	743000
15	221000	232	138000	698000	599	1130000	445000	682	819000

16	211000	214	122000	715000	571	1100000	450000	618	750000
17	209000	204	115000	732000	530	1050000	443000	537	642000
18	213000	200	115000	732000	479	948000	428000	482	556000
19	215000	204	118000	716000	409	790000	408000	436	480000
20	221000	210	126000	693000	380	711000	382000	391	404000

21	238000	263	170000	659000	360	640000	351000	350	331000
22	277000	382	287000	616000	337	560000	320000	321	277000
23	313000	498	421000	570000	314	483000	299000	292	235000
24	316000	524	447000	524000	291	412000	280000	264	200000
25	322000	457	397000	482000	271	353000	268000	241	174000

26	327000	439	388000	453000	258	316000	264000	222	159000
27	324000	439	384000	439000	246	292000	256000	204	141000
28	329000	546	486000	440000	249	296000	249000	186	125000
29	356000	628	604000	449000	346	419000	242000	168	110000
30	392000	650	687000	442000	395	472000	240000	151	98000

31	---	---	---	422000	360	411000	---	---	---


	JULY			AUGUST			SEPTEMBER

1	235000	147	93000	147000	126	49800	181000	155	75700
2	226000	144	88200	143000	122	47000	172000	149	69100
3	221000	142	84700	135000	118	43100	163000	141	62000
4	218000	140	81900	128000	114	39600	155000	132	55300
5	214000	137	79400	127000	111	37900	145000	125	48800

6	210000	135	76400	124000	108	36000	134000	118	42900
7	206000	132	73400	124000	105	35100	127000	110	37700
8	202000	130	70500	123000	102	33900	123000	102	33800
9	196000	127	67100	122000	98	32500	121000	98	31900
10	192000	126	65300	116000	94	29500	122000	98	32200

11	190000	134	68700	117000	96	30200	120000	98	31700
12	189000	144	73500	118000	98	31100	119000	98	31500
13	192000	148	77000	117000	95	29800	124000	95	31600
14	192000	141	73100	123000	102	33700	125000	90	30500
15	186000	134	67000	130000	108	38100	125000	86	29000

16	178000	126	60600	134000	111	40100	125000	82	27500
17	165000	119	52900	134000	113	40700	123000	82	27300
18	156000	112	47100	138000	114	42500	126000	84	28300
19	155000	105	43900	134000	109	39300	124000	79	26400
20	152000	101	41200	137000	118	43600	127000	99	34100

21	152000	98	40300	155000	146	61000	130000	107	37700
22	159000	96	41200	158000	148	63000	124000	97	32300
23	159000	94	40200	156000	143	60500	114000	90	27500
24	158000	91	38900	160000	161	70000	112000	89	27100
25	157000	89	37800	199000	195	105000	113000	91	28000

26	154000	89	37300	217000	201	118000	108000	92	26900
27	150000	90	36500	214000	192	111000	102000	89	24600
28	146000	90	35600	207000	180	101000	94600	85	21600
29	144000	91	35200	196000	170	89800	89700	81	19700
30	141000	104	39500	189000	164	83600	92800	81	20300

31	147000	129	51300	187000	159	80500	---	---	---