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Vegetation - Stratified Random Sampling 2001

Table 1. Aquatic area strata and the number of sites sampled by pool, 2001.

Stratum description	Stratum numeric code	Stratum letter code	Pool 4	Pool 8	Pool 13	Pool 26	La Grange Pool
2001 sampling season
Main channel border, Illinois River	1502	MCB-I	-	-	-	40	-
Main channel border	1503	MCB	-	100	70	49	78
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	-	175	198	80	100
Contiguous backwater, upper	1511	BWC-U	100	-	-	-	-
Contiguous backwater, lower	1512	BWC-L	176	-	-	-	-
Lake Pepin, upper	1513	TDL-U	75	-	-	-	-
Lake Pepin, lower	1514	TDL-L	75	-	-	-	-
Impounded	1520	IMP	-	225	209	40	-
Isolated backwater	1530	BWI	50	50	59	60	129
Isolated backwater, Illinois	1531	BWI-I	-	-	-	94	-
Lake	1532	LK	-	-	-	-	57
Total for 2001 sampling season			646	670	606	413	414

Table 1b. Aquatic area strata and the number of sites sampled by nontarget pool, 2001.

Stratum description	Stratum numeric code	Stratum letter code	Pool 11
2001 sampling season
Main channel border	1503	MCB	142
Secondary channel	1504	SC	77
Contiguous backwater	1510	BWC	130
Impounded	1520	IMP	204
Isolated backwater	1530	BWI	15
Total for 2001 sampling season			568

Page Last Modified: April 17, 2018