Thanks for all who took part! Here are six major findings: Aquatic habitat, fish, and macroinvertebrate communities are degraded throughout the Indian Mill Creek watershed. Fine substrate in the streambed has the strongest association with degraded macroinvertebrate communities. Our watershed model predicts high proportions of runoff in urban areas, like Brandywine Creek, and high field … Continue reading Study Complete!
Today we finished our final streambank erosion measurements along Indian Mill Creek. Oh how the time flies! We witnessed apple trees in bloom, spied on some orioles, and even found a morel mushroom. Thanks Justin and Jake for the help with the total station surveys. Be sure to check out these two events from the … Continue reading Indian Mill Creek is a wonderful place – Morels!
We just completed two days of laser scans to study streambank erosion in Indian Mill Creek. We had to stop for donuts too. Thanks Matt, Molly, and Noah for the help! Now to process the millions of data points we collected...thank goodness for computers! Mark your calendars: the findings will be presented July 10, 1:00pm … Continue reading Cool Lasers
Hey Indian Mill Creek fans! This past month we've been returning to the creek to finish the streambank erosion study. We've been checking erosion pins; over the winter there was a lot of erosion at some sites, and a lot of sediment deposition at others. The strong flows this spring moved log jams and piles … Continue reading Streambank Erosion Surveys!
This week, we finished the 2017 fieldwork of Indian Mill Creek by removing the automated stream temperature recorders and rain gauges. Our outside work is finished until spring, but there is lots of excitement inside with the data! We're using our data to assess how stream habitat and water quality are affecting fish and macroinvertebrates … Continue reading 2017 Fieldwork Complete
This summer, we've been monitoring the movement of sediment at nine sites in the Indian Mill Creek watershed. Our sites are designed to be representative of watershed conditions and not to pinpoint local problems. Thanks to all who helped with the stream and laboratory work! We monitor fine sediment that's suspended in the water by … Continue reading Sediment Loading Study
Lots of excitement in Indian Mill Creek these last couple weeks! We surveyed the fish communities at seven sites, and found some trout and native lampreys. Now we're sampling macroinvertebrates (stream bugs). Check out the dragonfly nymphs and crawdads in the photo. The critters in Indian Mill Creek are strongly affected by habitat, water quality, … Continue reading Bug and Fish Surveys
Today we're studying stream habitat in Indian Mill Creek. Why? It's essential for trout and other cool critters to survive. The riffles, pools, cobbles, wood, and riparian vegetation are all important habitat components. We survey them with a Global Positioning System, measuring tape, meter stick, and datasheet. Stay tuned to see how stream habitat is … Continue reading Stream Habitat Surveys!
Temperature loggers autonomously monitor the temperature of the stream. Every thirty minutes the logger takes a reading and records it, we will be collecting data from these once or twice a month so we can determine how close the stream is to the ideal temperature for trout habitat.