Note: While there are plenty of aqueducts in the western part of the U.S., I don't think there are any that are part of canals that were designed for transporting boats carrying goods which is what is being looked for in this cache. It is unlikely that you will be able to find an aqueduct that meets the requirements for this cache outside of the Northeast of the U.S. and in parts of Europe.
Aqueducts are structures built to channel water, either to get water to locations where water is scarce or to carry water, such as a canal, across a valley, river or stream. However, the aqueducts we are trying to find for this cache are aqueducts that are parts af canals, specifically, the kinds of canals that were designed for boats to travel upon. [i.e. Not just any aqueduct meets the specs for this cache.]
The model for this cache is the Antietam Aqueduct, (N39 25.050 W77 44.750) completed in 1834, which is one of eleven that were once a part of the Chesapeake and Ohio Canal. This blue-gray limestone aqueduct, which no longer has water in it, is in the best shape of any of the multi-arched C and O aqueducts which remain standing.
Remember, you need to find not just a canal - but a specific part of that canal - namely a structure called an aqueduct that is a part of the canal (and one that has not already been logged.)
The picture above shows where the C and O Canal was carried across the Antietam Creek. There is no water in the canal any more except in a few re-watered places.
Here are the rules to log this locationless geocache. Please read them carefully and adhere to them.
1. Use your GPS receiver to mark the location of the canal aqueduct you locate. Again, what is being looked for for this cache is an aqueduct that is a part of a canal designed for boats to travel upon. (Remember - what is being looked for is an aqueduct NOT a lock.)
2. Take a photo of the aqueduct that shows, ideally, you and your GPS receiver at the spot where you mark the waypoint for your log report. The photo needs to show the aqueduct - and show it so it can be seen to be an aqueduct and not just a bridge or something else that's not an aqueduct. If you are by yourself, try setting the timer on your camera. If there are other people nearby, ask someone to take the picture with you in it. One or two additional photos showing the surroundings will greatly enhance your report. Try to include a shot showing the part of the aqueduct through which the water flows or would have flowed. Also, it's good to take a shot of any signage relating to the aqueduct if there is any.
3. Submit a log report that includes the coordinates of the canal aqueduct and some descriptive information. Be sure to tell us the name of the canal and the city, state (province), and country. If you can find a website with additional information about the canal, please include a link, too. (Note that just because you may have found a canal does NOT mean you have found a canal aqueduct.)
4. Then immediately upload the required confirmation photo to log this cache as found. The usual locationless cache rules apply: one log per geocacher, and each location may be logged only once. Please read all the logs to be sure your canal aqueduct has not already been logged. All photos must be originals, and logs without GPS photos will be deleted, as will logs which do not meet the specified criteria.
Note: If you have found a pre-1900 aqueduct designed to transport water to cities, go to Ancient Aqueducts.