Geology, Aberjona River & Wetland, Monitoring Wells

Geology

Surficial geology map (Chute, 1944)

Bedrock exposed along Wildwood Avenue

Thin section of Dedham Granodiorite

Fracture in bedrock along Wood Avenue west of Aberjona River

Polished and unpolished faces of cores from Beatrice property

Diamicts from a split-spoon sample in a monitoring well south of W.R. Grace and from a shallow excavation at the former Riley Tannery property

Sands taken from split-spoon samples from the BUG well just north of Olympia Avenue and west of the UniFirst property

Lodgement till from split-spoon samples taken in wells drilled at W.R. Grace

Peat sample from wetland obtained with a post-hole digger

Organic matter from a washed sample of peat

Aberjona River and Wetland

Aberjona River watershed

USGS gaging station and weir on Aberjona River in Winchester, MA

Scott Bair and Maura Metheny on the mighty Aberjona - beaver dam in background

Aberjona River and wetland from Salem Street bridge

North end of wetland with well H in foreground

Boardwalk built into wetland to access monitoring wells for the 30-day aquifer test

Aberjona River lies just past monitoring wells in left foreground

Aberjona River wetland looking east from 15-acre property

Aberjona River near Salem Street bridge

Monitoring Wells

Nest of S90 wells between wells G and H on the east floodplain

Shallow, middle, deep wells in the S84 nest between wells G and H

BW6 well nest on the 15-acre property at site of Debris Pile E

Wells in back of Grace property at site of drum excavation