Date of Submission

Spring 2021

Academic Program

Environmental and Urban Studies

Project Advisor 1

Robyn Smyth

Abstract/Artist's Statement

Though environmental managers are increasingly turning to dam removal and alteration to mitigate the economic and environmental costs associated with their maintenance and operation, little is known about the potential environmental impacts of these management decisions as data is often not collected prior to and following implementation of changes. A biological assessment of a reach downstream of a prospective micro-hydroelectric project site was conducted in order to generate baseline data for the development of an adaptive management plan to assess the effects of small-scale hydro power projects on stream conditions. Biotic integrity of the reach downstream of the Annandale Dam (Annandale-On-Hudson, NY) and three other distinct riparian habitats along the Saw Kill were evaluated using six family-level metric indices, non-multidimensional scaling (NMDS) and indicator family analysis. Results indicated that the riparian habitats of the Saw Kill are characterized by little to no biological degradation. Multimetric index scores of the Annandale Dam were comparable to those of other good quality riparian habitats along the Saw Kill, suggesting that the presence of the dam does not substantially impair the water quality of downstream areas. Future biological assessments should focus on accounting for the effect of seasonal variation on macroinvertebrate community composition.

Open Access Agreement

On-Campus only

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

This work is protected by a Creative Commons license. Any use not permitted under that license is prohibited.

Bard Off-campus Download

Bard College faculty, staff, and students can login from off-campus by clicking on the Off-campus Download button and entering their Bard username and password.