07020500 DATA: Sediment Tables, 1998

Station list Available data
LOWER MISSISSIPPI RIVER BASIN

07020500 MISSISSIPPI RIVER AT CHESTER, IL

LOCATION.--Lat 37°54'10", long 89°51'10", 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 DAILY RECORD.--
SUSPENDED SEDIMENT: August 1980 to current year.

REMARKS.--Sediment records fair.

EXTREMES FOR PERIOD OF DAILY RECORD.--
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 FOR CURRENT YEAR.--
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean, 2,120 mg/L, June 20; minimum daily mean, 104 mg/L, Oct. 9.
SUSPENDED-SEDIMENT LOADS: Maximum daily, 2,400,000 tons, June 20; minimum daily, 32,100 tons, Sept. 15.

SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
		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	146000	127	49900	173000	179	83800	163000	214	94300
2	139000	126	47300	175000	187	88400	166000	207	92800
3	139000	119	44600	173000	184	85800	170000	205	93900
4	138000	111	41500	168000	174	79200	184000	245	122000
5	136000	114	42000	164000	172	76500	173000	330	154000

6	137000	122	45100	170000	188	86600	175000	428	202000
7	138000	114	42600	173000	186	86700	177000	407	194000
8	136000	109	39900	167000	162	72900	181000	369	180000
9	136000	104	38100	164000	157	69400	179000	334	161000
10	136000	126	46200	160000	160	69500	179000	300	145000

11	132000	106	37900	158000	182	77800	175000	256	120000
12	133000	114	40900	157000	157	66600	167000	215	96600
13	132000	117	41700	157000	157	66500	164000	191	84300
14	136000	118	43400	154000	163	67900	162000	189	82800
15	135000	118	42800	153000	159	65700	158000	189	80300

16	136000	128	47000	151000	153	62400	152000	177	72900
17	154000	141	58800	149000	150	60500	147000	190	75300
18	168000	142	64300	148000	172	68800	147000	237	94100
19	167000	147	66300	149000	170	68600	146000	170	66900
20	166000	179	80300	148000	149	59500	139000	152	57100

21	165000	158	70400	147000	143	57000	140000	159	60100
22	166000	143	63900	150000	146	59000	147000	182	72100
23	164000	138	61000	146000	149	58800	148000	203	81400
24	165000	143	63400	144000	152	59300	149000	183	73300
25	165000	144	64100	143000	150	57600	157000	171	72400

26	163000	143	63000	138000	147	54500	164000	175	77400
27	162000	142	62200	131000	139	49200	169000	208	95000
28	160000	129	55600	127000	134	46200	174000	230	108000
29	156000	118	49400	137000	156	57900	174000	243	114000
30	160000	131	56500	149000	186	74900	173000	219	102000

31	168000	145	65800	---	---	---	162000	193	84300


	JANUARY			FEBRUARY			MARCH

1	149000	186	75100	152000	146	59700	317000	436	374000
2	145000	182	71500	154000	141	58500	297000	419	335000
3	145000	168	65600	151000	152	62200	277000	367	274000
4	142000	154	59000	146000	149	58600	264000	345	246000
5	154000	154	64400	150000	141	57300	260000	290	204000

6	180000	187	91800	167000	166	75200	256000	233	161000
7	205000	255	142000	183000	182	89900	251000	212	144000
8	250000	361	248000	181000	196	95300	250000	214	145000
9	321000	632	553000	173000	210	98000	272000	318	235000
10	331000	715	639000	166000	194	87000	332000	489	432000

11	302000	558	455000	160000	173	74600	391000	644	673000
12	260000	424	298000	169000	201	92900	407000	803	883000
13	225000	385	234000	233000	353	227000	392000	845	893000
14	196000	291	154000	276000	506	377000	364000	659	649000
15	182000	233	115000	269000	463	336000	334000	524	472000

16	174000	229	107000	244000	394	260000	310000	423	354000
17	165000	220	98200	235000	343	217000	289000	348	271000
18	165000	208	92800	241000	313	204000	310000	362	304000
19	165000	189	84000	252000	306	209000	362000	418	411000
20	155000	157	65800	264000	315	225000	434000	599	707000

21	151000	145	59300	260000	289	203000	481000	884	1150000
22	153000	151	62300	257000	270	188000	506000	1230	1690000
23	155000	160	67000	250000	252	170000	510000	1150	1590000
24	156000	167	70400	245000	216	143000	498000	986	1330000
25	158000	154	65300	239000	205	132000	474000	922	1180000

26	154000	140	58200	233000	202	127000	447000	883	1060000
27	152000	138	56500	243000	260	172000	418000	847	954000
28	145000	138	54000	287000	355	278000	403000	806	877000
29	144000	153	59700	---	---	---	388000	741	776000
30	148000	134	53400	---	---	---	380000	687	705000

31	148000	150	59900	---	---	---	377000	747	761000


	APRIL			MAY			JUNE

1	381000	842	867000	435000	662	778000	254000	498	341000
2	410000	867	961000	453000	793	972000	244000	459	303000
3	456000	951	1170000	467000	862	1090000	246000	373	248000
4	492000	1070	1420000	464000	612	767000	255000	369	255000
5	516000	1200	1680000	450000	527	640000	277000	390	291000

6	532000	1320	1900000	428000	405	468000	292000	462	366000
7	540000	1280	1870000	400000	363	392000	306000	877	723000
8	537000	1120	1620000	373000	369	371000	285000	718	557000
9	523000	1080	1520000	356000	324	311000	266000	520	373000
10	504000	1070	1450000	345000	345	321000	269000	440	320000

11	488000	872	1150000	338000	321	294000	290000	664	520000
12	487000	801	1060000	333000	304	273000	310000	605	507000
13	500000	763	1030000	324000	304	266000	319000	569	490000
14	511000	730	1010000	316000	297	253000	320000	565	488000
15	515000	726	1010000	311000	260	218000	343000	600	563000

16	535000	645	932000	306000	231	191000	363000	1190	1170000
17	555000	778	1170000	296000	256	204000	372000	1340	1350000
18	571000	893	1380000	280000	234	176000	391000	1480	1560000
19	570000	727	1120000	260000	256	179000	410000	1740	1920000
20	561000	717	1090000	248000	255	171000	419000	2120	2400000

21	545000	725	1070000	253000	244	167000	426000	2080	2390000
22	524000	651	921000	264000	235	168000	440000	1710	2030000
23	504000	566	769000	281000	238	180000	463000	1380	1720000
24	483000	515	672000	294000	291	231000	483000	1120	1460000
25	463000	538	672000	288000	300	234000	490000	955	1260000

26	448000	582	702000	290000	342	269000	487000	1050	1380000
27	433000	623	728000	307000	370	307000	476000	933	1200000
28	418000	582	657000	317000	396	339000	456000	798	983000
29	410000	566	627000	307000	448	371000	429000	684	792000
30	417000	566	638000	288000	473	367000	410000	585	647000

31	---	---	---	273000	487	359000	---	---	---


	JULY			AUGUST			SEPTEMBER

1	398000	503	541000	353000	1110	1060000	178000	222	107000
2	402000	468	508000	323000	941	821000	179000	249	120000
3	420000	600	682000	303000	789	646000	165000	231	103000
4	439000	834	990000	277000	783	583000	143000	213	82000
5	436000	977	1150000	252000	750	511000	130000	204	71800

6	423000	933	1070000	254000	703	482000	129000	197	68700
7	423000	942	1080000	258000	589	410000	129000	190	66000
8	435000	1020	1200000	247000	484	323000	126000	180	61000
9	442000	996	1190000	241000	405	264000	119000	172	54900
10	444000	937	1120000	243000	365	240000	111000	153	45700

11	450000	906	1100000	239000	356	229000	109000	172	50700
12	450000	883	1070000	233000	355	223000	110000	161	47900
13	446000	872	1050000	230000	354	219000	107000	143	41200
14	437000	984	1160000	225000	332	202000	102000	127	35000
15	425000	864	992000	215000	309	180000	104000	114	32100

16	407000	721	793000	212000	284	162000	115000	136	42400
17	383000	729	753000	208000	263	148000	165000	269	127000
18	355000	766	732000	189000	287	146000	238000	761	494000
19	321000	720	624000	180000	391	190000	226000	902	549000
20	289000	646	503000	185000	278	139000	195000	648	341000

21	270000	552	401000	188000	225	114000	175000	473	224000
22	257000	498	345000	178000	226	109000	161000	373	162000
23	249000	470	316000	169000	208	94600	148000	286	115000
24	239000	480	309000	155000	185	77100	141000	225	85700
25	235000	452	287000	147000	154	61200	140000	182	68900

26	233000	413	260000	149000	162	65000	150000	176	71200
27	230000	377	234000	152000	151	62000	154000	178	74100
28	239000	455	299000	152000	155	63500	157000	168	71500
29	301000	1080	883000	156000	165	69800	156000	159	67000
30	333000	1180	1060000	163000	178	78200	150000	163	66200

31	356000	1140	1100000	170000	192	88100	---	---	---