07010000 DATA: Sediment Tables, 1999

Station list Available data
LOWER MISSISSIPPI RIVER BASIN

07010000 MISSISSIPPI RIVER AT ST. LOUIS, MO

LOCATION.--Lat 38°37'44", long 90°10'47", Hydrologic Unit 07140101, on downstream side of west pier of Eads Bridge at St. Louis, 15.0 mi downstream from Missouri River, 19.2 mi upstream from Meramec River, and at mile 180.0 above the Ohio River.

DRAINAGE AREA.--697,000 mi², approximately.

PERIOD OF RECORD.--
WATER TEMPERATURES: October 1951 to current year.
SEDIMENT RECORDS: April 1948 to current year.

REMARKS.--Sediment discharge computed from turbidity readings. Sediment records fair except for estimated daily load Jan. 3-17, which are poor.

EXTREMES FOR PERIOD OF DAILY RECORD.--
SEDIMENT CONCENTRATIONS: Maximum daily mean, 6,720 mg/L, Feb. 24, 1985; minimum daily mean, 19 mg/L, Jan. 21 and 22, 1967.
SEDIMENT LOADS: Maximum daily, 9,830,000 tons, Feb. 24, 1985; minimum daily, 2,800 tons, Jan. 21, 1967.

EXTREMES FOR CURRENT YEAR.--
SEDIMENT CONCENTRATIONS: Maximum daily mean, 3,280 mg/L, Oct. 8; minimum daily mean, 71 mg/L, Sept. 13.
SEDIMENT LOADS: Maximum daily, 3,610,000 tons, Oct. 8; minimum daily, 22,600 tons, Sept. 13.

SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
		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	106	41700	213000	152	87200	194000	224	117000
2	144000	153	59400	221000	145	86300	192000	195	101000
3	158000	155	66000	280000	218	165000	215000	218	126000
4	160000	192	82900	365000	462	455000	219000	231	136000
5	153000	254	105000	423000	2200	2510000	209000	356	201000

6	221000	241	144000	426000	1330	1530000	198000	206	110000
7	368000	1560	1560000	396000	1460	1560000	197000	184	98000
8	407000	3280	3610000	369000	1200	1200000	236000	174	111000
9	390000	2190	2300000	334000	835	753000	267000	287	207000
10	370000	1450	1450000	325000	779	684000	267000	733	528000

11	341000	1080	997000	355000	558	535000	236000	640	408000
12	302000	903	736000	372000	614	617000	222000	475	284000
13	253000	612	418000	371000	638	639000	209000	343	194000
14	220000	452	268000	360000	691	672000	199000	223	120000
15	195000	424	223000	338000	800	730000	187000	169	85300

16	188000	232	118000	313000	679	574000	177000	155	73900
17	188000	217	110000	293000	558	442000	178000	155	74500
18	212000	185	106000	282000	398	303000	170000	159	73000
19	273000	192	142000	277000	415	310000	174000	133	62300
20	338000	528	482000	268000	368	266000	167000	127	57200

21	372000	851	855000	255000	360	248000	166000	132	59200
22	365000	975	961000	244000	303	199000	159000	204	87700
23	336000	885	803000	241000	216	141000	152000	137	56200
24	306000	875	723000	229000	228	141000	157000	160	67900
25	272000	570	419000	232000	213	133000	134000	159	57500

26	247000	465	310000	229000	230	142000	120000	159	51400
27	222000	312	187000	221000	227	135000	119000	148	47500
28	218000	239	141000	219000	219	129000	123000	130	43200
29	212000	204	117000	213000	269	155000	117000	151	47900
30	216000	191	111000	207000	238	133000	113000	121	37000

31	215000	180	105000	---	---	---	102000	129	35500


	JANUARY			FEBRUARY			MARCH

1	103000	132	36800	289000	560	437000	178000	264	127000
2	104000	118	33100	315000	605	515000	174000	267	125000
3	105000	---	32000	307000	667	553000	182000	306	150000
4	110000	---	32000	288000	666	518000	185000	387	193000
5	107000	---	34000	278000	535	401000	190000	409	210000

6	115000	---	36000	272000	431	316000	192000	360	187000
7	118000	---	42000	304000	767	629000	195000	341	179000
8	113000	---	41000	355000	698	669000	186000	276	139000
9	106000	---	39000	361000	687	670000	208000	432	243000
10	105000	---	38000	337000	802	730000	256000	652	451000

11	104000	---	37000	321000	840	728000	280000	1040	789000
12	100000	---	35000	304000	778	639000	273000	913	673000
13	102000	---	34000	294000	561	445000	259000	793	554000
14	102000	---	33000	294000	641	509000	254000	530	364000
15	108000	---	33000	289000	598	466000	239000	488	315000

16	119000	---	33000	276000	623	464000	221000	418	249000
17	121000	---	35000	262000	819	580000	220000	398	237000
18	128000	95	37000	258000	570	397000	221000	370	221000
19	136000	96	40000	255000	435	299000	224000	324	196000
20	140000	124	46900	256000	346	239000	235000	343	218000

21	141000	93	35600	244000	350	230000	228000	336	207000
22	152000	217	89100	229000	296	183000	211000	325	185000
23	228000	262	161000	212000	297	170000	203000	378	207000
24	275000	593	440000	214000	291	168000	214000	362	209000
25	274000	867	641000	201000	253	137000	222000	307	184000

26	256000	974	673000	191000	264	136000	214000	272	157000
27	247000	734	490000	190000	271	139000	203000	254	139000
28	236000	550	350000	189000	275	140000	202000	241	131000
29	236000	482	307000	---	---	---	193000	233	122000
30	236000	415	264000	---	---	---	179000	218	106000

31	248000	425	285000	---	---	---	173000	208	96900


	APRIL			MAY			JUNE

1	165000	209	93100	519000	1120	1570000	462000	478	597000
2	163000	195	86000	532000	1500	2150000	456000	431	531000
3	167000	198	89200	524000	1050	1480000	449000	418	507000
4	181000	199	97400	501000	778	1050000	454000	463	568000
5	178000	238	114000	491000	609	807000	459000	711	882000

6	185000	228	114000	516000	776	1080000	451000	698	850000
7	197000	198	105000	537000	926	1340000	444000	601	721000
8	209000	213	120000	548000	1030	1520000	435000	471	554000
9	236000	283	180000	543000	947	1390000	421000	549	624000
10	282000	518	394000	512000	863	1190000	407000	650	715000

11	302000	832	679000	468000	561	708000	397000	503	539000
12	289000	1170	912000	431000	638	742000	390000	529	557000
13	289000	1440	1130000	407000	630	693000	384000	907	940000
14	297000	1040	833000	387000	427	446000	377000	867	882000
15	304000	790	648000	389000	426	448000	377000	686	698000

16	333000	664	597000	402000	496	538000	380000	611	627000
17	407000	1000	1100000	416000	667	750000	388000	478	501000
18	469000	1860	2360000	430000	636	738000	390000	1160	1220000
19	495000	2430	3240000	452000	632	772000	384000	771	799000
20	503000	2320	3160000	475000	766	983000	378000	677	691000

21	504000	1580	2140000	491000	894	1190000	373000	589	593000
22	491000	1120	1490000	497000	695	932000	370000	448	448000
23	467000	814	1030000	489000	1190	1580000	366000	311	308000
24	439000	627	744000	485000	1200	1570000	360000	314	306000
25	438000	641	758000	490000	838	1110000	355000	300	288000

26	456000	1330	1640000	499000	1360	1840000	355000	373	357000
27	465000	1200	1500000	497000	1370	1830000	354000	395	378000
28	483000	801	1040000	492000	761	1010000	338000	463	423000
29	491000	790	1050000	484000	637	833000	329000	407	362000
30	500000	1230	1660000	476000	586	753000	335000	377	341000

31	---	---	---	469000	477	604000	---	---	---


	JULY			AUGUST			SEPTEMBER

1	374000	626	632000	268000	318	230000	154000	104	43200
2	407000	1080	1190000	271000	301	220000	147000	92	36500
3	423000	1810	2070000	269000	292	212000	148000	102	40600
4	414000	1450	1620000	259000	245	171000	142000	97	37100
5	388000	1080	1130000	247000	227	151000	142000	95	36300

6	360000	875	850000	236000	223	142000	142000	81	31000
7	345000	773	720000	227000	202	124000	130000	88	30900
8	329000	746	663000	227000	182	111000	131000	81	28700
9	312000	539	454000	229000	231	143000	132000	96	34100
10	312000	512	432000	222000	175	105000	128000	88	30300

11	311000	768	645000	209000	162	91500	122000	84	27500
12	305000	595	490000	219000	243	144000	122000	79	26100
13	294000	506	401000	233000	286	180000	117000	71	22600
14	288000	544	423000	220000	744	442000	121000	75	24500
15	285000	397	305000	199000	670	360000	120000	140	45300

16	275000	275	204000	190000	481	247000	123000	113	37500
17	271000	474	347000	182000	318	156000	123000	129	42800
18	261000	353	249000	180000	210	102000	126000	107	36500
19	261000	325	229000	170000	154	70800	121000	92	29900
20	250000	273	184000	160000	126	54200	125000	91	30700

21	247000	284	189000	153000	116	48100	117000	99	31200
22	245000	226	149000	154000	129	53600	122000	98	32300
23	240000	225	146000	155000	124	51900	118000	106	33800
24	231000	217	135000	159000	116	49600	117000	107	33900
25	233000	228	143000	164000	100	44200	117000	105	33200

26	237000	207	132000	164000	96	42300	114000	105	32300
27	242000	247	161000	167000	89	40300	114000	113	34800
28	246000	260	173000	161000	87	37700	114000	113	34800
29	256000	296	205000	170000	90	41100	136000	113	41500
30	259000	317	221000	163000	94	41400	140000	113	42700

31	261000	341	241000	155000	89	37300	---	---	---