The C-MAP 4D Lake Michigan adapts to your boating needs because it's the only digital chart that offers advanced features and lets you add data and services as they become available.
When you choose Full 4D content you will experience the latest in navigation
data and technology such as:
4D cartography is compatible with the Furuno 1670F / 1870F, and Standard CPN 7000i, and CPN1010i units.
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|NA-D931||4D Lake Michigan||
The White River looms large in Indianapolis, with some stretches spanning more than 500 feet wide where it runs through downtown. But the river has historically received more sewage than respect. But, like many urban rivers, the White River is in the midst of a slow recovery from decades of neglect and abuse. Between a massive $2 billion sewer improvement project to new funding for programs to educate people about the river and get them on the water, the recovery could hasten as momentum builds behind the idea that a healthy, accessible White River would enrich the city and its citizens. Behind that work, a growing number of water quality monitoring programs will help track improvements on the river and catch any emerging pollution concerns.Read More
Much of the American west depends upon groundwater for its survival. Originally the region was sustainably settled and farmed by Native American tribes. Eventually, new settlers without those abilities came west and resettled in a sort of patchwork; newcomers chose to stay near springs and other places where exploitable groundwater was close to the surface. In time, technologies developed enough for deeper wells to be drilled and groundwater to be pumped. This made the high level of development that is now present in places like Los Angeles and Phoenix possible. However, it proceeded without any detailed understanding of the groundwater recharge process in the area.Read More
[caption id="attachment_27967" align="alignright" width="320"] Jason-3 sea level residuals on 12/07/2017. (Courtesy: NASA/JPL-Caltech.)[/caption] El Niño and La Niña are recurrent warming and cooling patterns in the tropical Pacific Ocean that affect weather patterns around the world. While El Niño tends to spring up due to a random wind change in the tropical Pacific, La Niña often follows on El Niño’s heels, cooling the tropical Pacific Ocean, causing drought conditions across the southern tier of the US. How long drought will persist due to La Niña is an important question for every community that suffers from extremely dry conditions.Read More