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The Upper Midwest Environmental Sciences Center of the U.S. Geological Survey and its state partners monitor the aquatic vegetation as well as fish, water quality, and macroinvertebrates in the Upper Mississippi River System. The objective is to accumulate data on aquatic vegetation over a long term using a standardized protocol across the system. The data provide basic information on the vegetation growth within pools for use by resource managers and planners as well as the public for the protection and enhancement of the Upper Mississippi River System. This report summarizes the annual stratified random sampling monitoring results of aquatic vegetation in the Upper Mississippi River System.
In 2003, the format of the annual reports was changed to a Web-based annual update where all years of data are presented in each table. Links to older vegetation status reports are below:
Distribution and frequency of submersed aquatic vegetation in the Upper Mississippi River System are monitored as part of the Long Term Resource Monitoring Program. This report summarizes results of sampling aquatic vegetation along fixed transects in Navigation Pools 4, 8, 13, and 26 in the Upper Mississippi River and La Grange Pool in the Illinois River in 1996. Plants were sampled at regular intervals along fixed transects using a modified rake technique. Sampling was conducted twice during the growing season (spring and summer). Twenty-four submersed and rooted floating-leaved species were found. Most species were found in Pools 4, 8, and 13. Pool 26 had the fewest (3) number of species and Pool 4 had the greatest...
The Upper Midwest Environmental Sciences Center of the U.S. Geological Survey and its state partners monitor the aquatic vegetation as well as fish, water quality, and macroinvertebrates in the Upper Mississippi River System. The objective is to accumulate incremental data on aquatic vegetation over a long term using a standardized protocol across the system. The data provide basic information on the vegetation growth within pools for use by resource managers and planners as well as the public for the protection and enhancement of the Upper Mississippi River System. This report summarizes the annual stratified random sampling monitoring results of aquatic vegetation in the Upper Mississippi River System.
Aquatic vegetation of the Upper Mississippi River System is monitored as part of the Long Term Resource Monitoring Program. This report summarizes the 1993 effort of monitoring submersed aquatic vegetation (SAV) along permanently established transects in vegetated locations within certain LTRMP study reaches, specifically Pools 4, 8, 13, and 26 of the Upper Mississippi River and La Grange Pool of the Illinois River. Data are collected during two sampling windows, mid-May through mid-June, and mid-July through August. Fifteen species of SAV were found along transects during the 1993 season. The greatest number of species found (12) was in Pool 4 and the fewest number found (2) was in Pool 26. Coon's tail and sago...
Aquatic vegetation was investigated in five navigation pools in the Upper Mississippi River System using a new protocol named “stratified random sampling” or SRS protocol for the first time in 1998. The five pools were Pools 4, 8, 13, and 26 of the Upper Mississippi River and La Grange Pool of the Illinois River. The results on submersed aquatic vegetation and rooted floating–leaf aquatic vegetation were summarized in this report. The percent frequencies of submersed aquatic vegetation in shallow water areas (≤ 3 m deep at flat-pool condition) in the five pools were 36.6%, 47.6%, 42%, 6.1%, and 0%, respectively. The aquatic area strata that were directly influenced by the flow in the main channel, such as the main...
Five habitats were required to be sampled under the LTRMP: Channel Border Unstructured (CB-U), Channel Border - Wing Dam (CB-W), Backwater Contiguous (BW-C), Backwater Isolated (BW-I), and Impoundment (IMP). Similar weekly trends were seen in all five habitats during the year. Water clarity as indicated by nephelometric turbidity and Secchi disk depth transparency decreased from winter to summer, then increased during late summer and autumn. Dissolved oxygen (DO) showed similar trends in all habitats, as did temperature. A period of severe thunderstorms during the end of May produced sufficient runoff to increase flows in the river. All habitats experienced a very noticeable decrease in DO levels and a slight increase...
Aquatic vegetation data were collected in the Upper Mississippi River System (UMRS) under the Long Term Resource Monitoring Program (LTRMP). From 1991 to 2002, five reaches were surveyed every year (key pools), and another five reaches were surveyed once (outpools). The study design changed from a protocol involving sampling along transects (1991–2000) to a protocol incorporating stratified random sampling (1998–2002) with concurrent sampling under both protocols in 1998–2000. The frequency of occurrence of plants revealed no synchronous trends among three key pools (Pools 4, 8, and 13) supporting sizable submersed aquatic vegetation beds. Submersed aquatic vegetation in upper Pool 4 declined steadily between 1991...
The Upper Midwest Environmental Sciences Center of the U.S. Geological Survey and its state partners monitor the aquatic vegetation as well as fish, water quality, and macroinvertebrates in the Upper Mississippi River System. The objective is to accumulate incremental data on aquatic vegetation over a long term using a standardized protocol across the system. The data form a core base for use by resource managers and planners as well as the public for the protection and enhancement of the multiuse of the Upper Mississippi River System. This report is designed for Web publishing of the annual monitoring results of aquatic vegetation in the Upper Mississippi River System using a stratified random sampling protocol...
The Long Term Resource Monitoring Program conducted monitoring of submersed aquatic vegetation in Pool 8 of the Upper Mississippi River System in 1995. A rapid assessment technique was used to sample 45 transects in eight backwaters during two sampling windows (spring and summer). Sixteen species from 10 families were recorded. The number of species increased from spring (13) to summer (15). Zannichellia palustris L. was found only during the spring sampling period, while Vallisneria americana L., Heteranthera dubia (Jacq.) MacM., and Najas flexilis (Willd.) Rostk. & Schmidt were found only in summer. Lawrence Lake had the most species (15), and the Boomerang Island area had the least (6). Frequency of vegetated...
Distribution and frequency of aquatic vegetation in the Upper Mississippi River System are monitored as part of the Long Term Resource Monitoring Program. This report summarizes results of sampling aquatic vegetation along fixed transects in Navigation Pools 4, 8, 13, and 26 in the Upper Mississippi River and La Grange Pool of the Illinois River in 1995. Pool 26 includes 12 miles of the Illinois River upstream of its confluence with the Mississippi River; all of the backwaters surveyed in this river reach are on the lower Illinois River. Plants were sampled using a modified rake technique along fixed transects. Data from additional qualitative surveys (or informals) was used to augment species records in each pool....
The Upper Midwest Environmental Sciences Center of the U.S. Geological Survey and its state partners monitor the aquatic vegetation as well as fish, water quality, and macroinvertebrates in the Upper Mississippi River System. The objective is to accumulate data on aquatic vegetation over a long term using a standardized protocol across the system. The data provide basic information on the vegetation growth within pools for use by resource managers and planners as well as the public for the protection and enhancement of the Upper Mississippi River System. This report summarizes the annual stratified random sampling monitoring results of aquatic vegetation in the Upper Mississippi River System.
Vegetation, fish, and water quality were the three components chosen for data collection for the Long Term Resource Monitoring Program during 1990. This report represents the vegetation aspect of the study done on Pool 8 of the Upper Mississippi River System. The purpose of the vegetation effort is to conduct a baseline study to document the abundance and distribution of Pool 8 terrestrial and aquatic vegetation during the next decade. Quantitative sampling along transects in 1990 provided descriptive summaries of species occurrence for selected locations within the pool. Five transects were chosen to represent Pool 8. The transects were divided into plant communities (polygons). One hundred forty-two aquatic polygons...
Aquatic vegetation of the Upper Mississippi River System is monitored as part of the Long Term Resource Monitoring Program. This report summarizes the 1994 effort of monitoring submersed aquatic vegetation (SAV) along transects permanently established in vegetated locations within four navigation pools of the Upper Mississippi River and one navigation pool of the Illinois River. A total of 17 species of SAV were found along transects during the 1994 season. Several additional species were found during informal surveys. More species of submersed aquatic macrophytes were found along transects in lower Pool 4 than in any other reach. Across all pools, sago pondweed (Potamogeton pectinatus) was the species most frequently...
Aquatic vegetation of the Upper Mississippi River System is monitored as part of the Long Term Resource Monitoring Program. This report summarizes the 1992 effort of monitoring submersed aquatic vegetation (SAV) along transects permanently established in vegetated locations within four navigation pools of the Upper Mississippi River and one navigation pool of the Illinois River. More species of submersed aquatic macrophytes were found along transects in lower Pool 4 than in any other reach. La Grange Pool and Pool 26 transects had the fewest species. Across all pools, sago pondweed (Potamogeton pectinatus) and coon's tail (Ceratophyllum demersum) were the species most frequently found. Several species of SAV were...
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