Knights Landing is a small Yolo County town on the Sacramento River. One fun feature of Knights Landing is the drawbridge on SR 113 over the River to Sutter County. This bridge is visible from the parking spot for the cache. I have only seen this bridge open twice and it is quite an event when an opening occurs. In the 1970s, there was a bridge tender on duty at all times to open the bridge but now you have to call ahead if you are bringing a tall ship up or down the river.
The United States Geological Survey (USGS) has many missions. At one time, a major mission of the USGS was the supplying of topographic maps of the United States on several scales. Our cache series is based on the 7.5-minute quadrangles.
The Knights Landing Quadrangle boundaries are:
N 38º 45’ 00” and N 38º 52’ 30”
W 121º 37’ 30” and W 121º 45’ 00”
The term quadrangle is used, instead of quadrilateral or rectangle, because the sides of these blocks are curved. The US is divided up into quadrangles that are 7.5 minutes by 7.5 minutes. Since a degree is divided into 60 minutes, a quadrangle one degree by one degree contains 64 of these quadrangles. The USGS also produced a 15-minute series, but that’s another story.