07/17/2024
There are some naturalists among "friends" of this page. A few might be interested in mussels. Iowa has lost over 99% of its mussels. People who paddle, fish or visit our streams likely know that they don't see many mussels any more. Our rivers have been very flashy for the last 40 years or so. Sand moves and covers mussels to a depth where they get no oxygen. They die. Of course Raccoons love them. Pistolgrip mussels are ENDANGERED in Iowa. Good news! I am very pleased to have found a very young Pistolgrips upstream in Harden Creek in Greene County during water quality testing . Bad news--(20 mg/l nitrate yesterday at 4 sites. Data entered on IWLA Hub) Farmer applied N accumulated during the drought. It is being washed with recent rains. DM Waterworks has to get drinking water down to 10 mg/l for public health reasons.