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February 5th, 2021, Karst Geology and Sinkholes

Virtual Event: Join us to learn about sink hole issues in the Lehigh Valley. The program will present the basics of karst geology and its relationship to sink holes.


Sinkholes – Not In My Backyard!
John Mauser, Martins-Jacoby Watershed Association

Through Zoom, 12:00 pm, February 5th.

Friday February 5th, Illicks Mill (small live audience) and live-streamed.

Tatamy Stockertown Bridge

Join us to learn about sink hole issues in the Lehigh Valley. The program will present the basics of karst geology and its relationship to sink holes.

Bushkill between Tatamy and Stockertown

You will also learn what sink holes are, and where they are occurring, and how they can be mitigated. This program will feature case studies of sink hole development along the Bushkill Creek between Stockertown and Tatamy, and in Lower Nazareth Township.

Trexler Meadow

Funded by a Lehigh Valley Greenways mini-grant, Master Watershed Stewards in 2019 piloted a meadow conversion at Trexler Park. The Trexler Meadow project addresses the overuse and misuse of home herbicides and pesticides, as this can be a major source of water pollution. Vast expanses of lawn in suburban areas can be time-consuming and expensive to maintain. There has been a growing interest in using wildflower meadows as an alternative to turf grass. While large-scale, multi-acre meadow establishment projects have huge impact, the conversion process is daunting to homeowners. To address this challenge, we installed a quarter acre demonstration native plant meadow at the Trexler Environmental Center using a kill-and-seed + plug method to illustrate an attainable result for a homeowner.

Municipal Raingardens

Township and Borough government buildings have a good deal of local community traffic as people come to pay bills, attend meetings, and do local business. So these buildings are perfect sites to install demonstration examples of stormwater management practices that homeowners could install on their own properties. Over the past ten years, the WCLV has worked with Master Watershed Stewards and local municipal public works staff to design and install rain gardens all around the Lehigh Valley. Rain gardens are in place at the Upper Saucon Township building, the Upper Saucon Township Authority, and Bushkill, Plainfield, and Pen Argyl municipal buildings.

Rain garden at Pen Argyl Borough

Ross McLennan at the completed Borough rain garden
MWSs Jane Cook and Mike Nagle Planting Plugs

Bushkill Township Rain Garden

The Bushkill Township rain garden was built in 2013 with a Lehigh Valley Greenways grant. Master Watershed Stewards designed and built the garden with the help of the Bushkill Township roads crew.

Hokendauqua Park Pussy Willow Buffer

This project was supported by a Lehigh Valley Greenways mini-grant and done in collaboration with the Bertsch Hokendauqua Catasauqua Watershed Association. The project included treating the existing lawn area, planting 425 pussy willow live stakes – 17 varieties! – and creating a sign to explain the benefits of buffers to park visitors. The pussy willow varieties were chosen for their aesthetic value to florists, once the willows grow in a little, pussy willows can be harvested and sold to local florists. This project is located at Hokendauqua Park on Lehigh Street in Whitehall just off Rt. 145 and is accessible to the public.

March 30th, 2021, Noon – The Delaware River Basin – A Framework of Water Law and Regulation

Virtual Event: JThe Delaware River impacts the lives of 13 million people just they continue to impact the river. This program provides an overview of this interactive relationship, including the basin’s decline from pollution since European settlement, and its recent revival to become the 2020 river of the year.
Register here


The Delaware River Basin
Harry BoertzelBucks County Master Watershed Steward

Watch live on Facebook, or register to watch through Zoom, 12:00 pm, March 30th.

Tuesday, March 30th at noon – presented through webinar and live-streamed on Facebook. Register here for the Zoom webinar.

The Delaware River impacts the lives of 13 million people just they continue to impact the river. This program provides an overview of this interactive relationship, including the basin’s decline from pollution since European settlement, and its recent revival to become the 2020 river of the year.

Join us to learn the history of water quality in the Delaware River basin, and the legal and regulatory framework that provides basin management.

Little Lehigh Watershed Stewards – Current Activities

The LLWS have been working with the Lehigh County Authority on a water sampling and testing program. This program monitors water quality at nine sites along the main branch of the Little Lehigh and several tributaries. This provides valuable information to the water authority about water quality from as the creek flows from western Lehigh County into the city of Allentown.

Collecting water for test sample

At each site, water samples are collected and a multimeter is used to measure important parameters including temperature, pH and conductivity.

A multimeter is used to measure Temperature, pH, Conductivity, Salinity and Total Dissolved Solids