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Vegetation - Stratified Random Sampling 2002

Table 1. Aquatic area strata and the number of sites sampled by pool, 2002.

Stratum description	Stratum  numeric  code	Stratum letter code	Pool 4	Pool 8	Pool 13	Pool 26	La  Grange Pool
2002 sampling season
Main channel border, Illinois River	1502	MCB-I	-	-	-	40	-
Main channel border	1503	MCB	-	100	70	50	80
Secondary channel	1504	SC	-	120	70	50	50
Main channel border, upper	1505	MCB-U	30	-	-	-	-
Main channel border, lower	1506	MCB-L	40	-	-	-	-
Secondary channel, upper	1507	SC-U	40	-	-	-	-
Secondary channel, lower	1508	SC-L	60	-	-	-	-
Contiguous backwater	1510	BWC	-	174	200	80	100
Contiguous backwater, upper	1511	BWC-U	100	-	-	-	-
Contiguous backwater, lower	1512	BWC-L	180	-	-	-	-
Lake Pepin, upper	1513	TDL-U	75	-	-	-	-
Lake Pepin, lower	1514	TDL-L	75	-	-	-	-
Impounded	1520	IMP	-	224	209	40	-
Isolated backwater	1530	BWI	30	26	30	57	139
Isolated backwater, Illinois	1531	BWI-I	-	-	-	100	-
Lake	1532	LK	-	-	-	-	59
Total for 2002 sampling season			630	644	579	417	428

Table 1b. Aquatic area strata and the number of sites sampled by nontarget pool, 2002.

Stratum description	Stratum  numeric  code	Stratum letter code	Pool 5	Pool 7	Pool 12	Alton Pool
2002 sampling season
Main channel border	1503	MCB	71	71	153	201
Secondary channel	1504	SC	50	48	50	104
Contiguous backwater	1510	BWC	110	102	120	204
Impounded	1520	IMP	173	171	81	-
Total for 2002 sampling season			404	392	404	509

Page Last Modified: April 17, 2018