thumb|Aerial view of Portage, Wisconsin. The western end of the [[Portage Canal is visible at the upper right in the picture.]]
The Fox–Wisconsin Waterway is a waterway formed by the Fox and Wisconsin Rivers. First used by European settlers in 1673 during the expedition of Marquette and Joliet, it was one of the principal routes used by travelers between the Great Lakes and the Mississippi River until the completion of the Illinois and Michigan Canal in 1848 and the arrival of railroads. The western terminus of the Fox–Wisconsin Waterway was at the Mississippi at Prairie du Chien, Wisconsin. It continued up the Wisconsin River about until reaching Portage, Wisconsin. There travelers would portage to the Upper Fox River, or eventually, use the Portage Canal. It continued about down the Fox River, following it through Lake Winnebago and continuing on the Lower Fox over 170 feet (50 m) of falls to the eastern terminus of Green Bay.
In the mid-19th century, the waterway was improved with numerous locks, dams and canals, including the Portage Canal between the Fox and Wisconsin Rivers. All the locks were not completed until 1876, well after the Illinois and Michigan Canal and at the point where the move from canals to railroads was in full swing. Later development on the waterway introduced barriers to navigation, such as the Prairie du Sac Dam. Use of the waterway was never substantial and it slowly died out. The Portage Canal was closed in 1951 and most of the Upper Fox River locks and dams fell into disuse. The lock system on the Lower Fox River, from Lake Winnebago to Green Bay, was closed in 1983 to prevent the upstream spread of invasive species such as the lamprey.
The Fox-Wisconsin is no longer used as a transportation route between the Mississippi River and the Great Lakes. However, parts of the waterway enjoy significant recreational use. 16 of the 17 locks on the lower Fox river have been restored to operation. The lock at Rapide Croche has been permanently sealed as a lamprey barrier as required by state law, so the lock system will not be fully restored, but a boat transfer system at Rapide Croche has been proposed as an alternative to restore navigation on the lower Fox river. thumb|600px|Longitudinal Cross section of Fox Wisconsin Waterway from Prairie du Chien to Green Bay, Wisconsin
Reaches
The Waterway can be divided into four physical reaches: the Lower Wisconsin River, "The Portage" canal and locks at Portage, the Upper Fox River and the Lower Fox River.
Physical description
Overall the system is about long. It begins in the west at the Mississippi River, rises at a nearly constant rate to Portage, crosses the Great-Lakes/Mississippi River divide at Portage, descends slowly along the Upper Fox to the Lake Winnebago Pool and then plunges in a short reach to the eastern end at the head of Green Bay on Lake Michigan.
Lower Wisconsin
The lower Wisconsin River flows through glacial drift until it enters the Driftless Area and eventually reaches the Mississippi River. It extends about 116 river miles (187 river kilometers) from Portage to its confluence with the Mississippi River, falling from about elevation above sea level (msl) at Portage to , msl at the Mississippi.
The reach has nearly uniform hydraulic gradient of about 1.5 feet per mile (0.3 m/km). There is only one major tributary, the Kickapoo River, which enters just before the Mississippi at about River Mile 16 (River km 26). Since there are no major tributaries, river discharge in the reach is relatively constant, averaging about at USGS gage 05407000 at Muscoda.
The river channel is dominated by sand. Sand bars, tow-head islands and new, multiple channels form often and constantly change. The channel is wide and shallow.
The Portage
The portage at Portage, Wisconsin is not unique as a passage between the Great Lakes and Mississippi River watersheds. Similar passages exist all along the watershed divide, for instance, at Chicago and in the northern Indiana area. What is unique is that, while the Fox is a small stream—typical of such passages—the Wisconsin is a large river, already over long. The divide between the two rivers has little grade change, although it is marshy. The Wisconsin occasionally flowed across the Portage into the Fox during high water. The Fox and Wisconsin have modified their courses and outlets over geological time and it is likely that either river has flowed into either watershed. Only about separate the two rivers. The Fox River end of the canal is at about elevation msl. The Wisconsin River end is slightly higher, depending on Wisconsin River discharge levels.
The Portage lies about 116 river miles (187 km) from the Mississippi River and 162 river miles (261 km) from Green Bay.
Upper Fox
The upper Fox River flows northwest from its headwater to within of the Portage. It then flows to the north-northeast to the Lake Winnebago Pool. It extends about 110 river miles (177 km) from Portage to Lake Winnebago, falling only about from elevation , msl at the Portage to , msl at Lake Winnebago.
The reach has a shallow grade. The hydraulic gradient averages about 4 inches per mile (0.06 m/km). There are two very shallow lakes along the way, Buffalo Lake and Puckaway Lake. The river drainage area grows significantly in size from at the Portage to about at USGS gage 004073500 at Berlin, where the average flow is about . The river discharge would grow at nearly the same proportions. Thus the Upper Fox grows from a small stream to a small river over its course. At Big Lake Butte des Morts it is joined from the north by flow from the Wolf River through Lake Poygan. The drainage area of Wolf River is more than twice the size of the drainage area of the Fox. But this extra flow joins the Fox only after it reaches the Lake Winnebago Pool.
The river channel is characterized by sand, silt and organic material. The channel, which ranges from , is shallow and generally widens and deepens as it approaches Lake Winnebago.
Lower Fox
The lower Fox River flows from the natural impoundment of Lake Winnebago to Lake Michigan. The reach has a very steep and changing grade. While the hydraulic gradient averages about 4 feet per mile (0.75 m/km), there are very large falls at (using the original French nomenclature) La Grand Kaukilin (Kaukauna), La Petite Chute (Little Chute) and La Grand Chute (Appleton). The total drop of these falls is approximately the same as Niagara Falls, although over a much longer stretch.
There are no major tributaries. Thus the river discharge is nearly constant, averaging about at USGS gage 040851385 at Green Bay.
History prior to modifications
The reach served as a highway for Native American peoples and, later, European explorers and fur traders both indigenous and European. They used the Fox and Wisconsin rivers as a primary highway between the Great Lakes and Mississippi River. In fact, it was the most heavily traveled of all the portages between the Great Lakes and Mississippi watersheds. From the Portage, one could travel north to nearly Lake Superior along the Upper Wisconsin River, west to the Mississippi along the Lower Wisconsin River, or northeast along the Fox River to Lake Michigan. Other watersheds, such as the Wolf River to north central Wisconsin or the Rock River to the Illinois country, were within easy distance.
In the 17th century the area was dominated by a number of tribes, Ho-Chunk, Menominee, Kickapoo and Ojibwe tribes among them.
The earliest French explorers were Father Marquette and Joliet in the summer of 1673. The French controlled the area for roughly 100 years until the end of the French and Indian War. Pressures from the French colonization of the eastern St Lawrence River and Great Lakes region eventually forced the Sauk and Meskwaki peoples to the region, displacing the original tribes. The Sauk and Meskwaki, realizing the importance of the Waterway, set up toll stations at portage locations. The French, resentful of lost trade, engaged the Meskwaki in a series of wars known as the Fox Wars.
French traders dominated the Waterway. They set up forts or settlements at La Baye (Green Bay), Portage (eventually Fort Winnebago), and Prairie du Chien. Their influence is apparent from the remaining place names and features: Prairie du Chien, Portage, De Pere, and Lake Butte des Morts to name a few. In fact, property in parts of Prairie du Chien, Portage, Kaukauna and Green Bay, all along the Waterway, still use French long-lot descriptions. All four cities are among the oldest in Wisconsin and the region.
The British officially controlled the area until the end of the American Revolutionary War and nominally until the end of the War of 1812, after which the American government was in firm control. The Fox were not totally displaced from the Waterway until 1832, when American troops forced them out during the Blackhawk War.
Modifications
The arrival of steamships to the region and the success of eastern canal systems, especially the Erie Canal, prompted various groups to look for improvements to the Waterway. In fact, there was great speculative pressure to capitalize on the natural extension of the Erie Canal to the Mississippi and beyond. Into the 1850s, most products from the Midwest traveled the long journey down the Mississippi and east from New Orleans. This shipment was expensive, absorbed farmers' profits and retarded economic growth. Promotion of the Portage Canal pointed to the economic advantage of a direct waterway connecting the Great Lakes to the Mississippi to spur local economic growth.
The earliest improvements along the Fox–Wisconsin Waterway began with a canal and lock at Portage. In 1829, Morgan Martin founded the Summit Portage Canal and Road Company to build the Portage canal. Chronically short of funds and impacted by depression in the 1830s, the company failed to complete the canal by 1838. About the same time, Congress had the Corps of Engineers (Corps) review the situation. It was recognized that the work would not only include a canal at Portage, but improvements along the length of both rivers between their mouths and the canal. In 1837 and 1839, the Corps examined the waterway's feasibility and recommended a "slack-water" (lock and dam) system. After numerous memorials from the territorial legislature, Congress authorized a land grant for the waterway project in 1846. There were various private companies formed to promote and build the Waterway; besides the Summit Portage company, there were the Fox and Wisconsin Improvement and the Green Bay and Mississippi Canal Companies. In 1872, the Corps assumed supervision of the waterway.
<gallery caption="Postcards from 1867-1870 for various towns along the waterway. Note the prominence of steamboats." mode="packed">
File:Prairie du Chien, Crawford County, Wisconsin 1870. LOC 73694549.jpg|Prairie du Chien
File:Bird's eye view of Sauk City, Sauk County, Wisconsin 1870. LOC 73694554.jpg|Sauk City
File:Bird's eye view of the city of Portage, Columbia Co., Wisconsin 1868. LOC 73694548.jpg|Portage
File:Bird's eye view of the city of Berlin, Green Lake Co., Wisconsin 1867. LOC 73694536.jpg|Berlin
File:Appleton, Outagamie County, Wisconsin 1867. LOC 73694533.jpg|Appleton
File:Green Bay and Fort Howard, Brown Co., Wisconsin 1867. LOC 73694541.jpg|Green Bay
</gallery>
thumb|Plan of Fox Wisconsin Waterway from Prairie du Chien on the Mississippi River along the Wisconsin River through the Portage to the Upper Fox.
Lower Wisconsin
Along the Lower Wisconsin there were initially no plans for improvements other than dredging and the clearing of snags. This soon proved to be inadequate. In 1868, the Corps began to experiment with wing dams and dredging to sluice out a 6-foot (1.8 m) deep channel. By 1880, the Corps had completed 157 dams totaling over , mainly in two sections: between Portage and Prairie du Sac and between Lone Rock and Boscobel. But the wing dams also proved inadequate and steamboats were not willing to risk the passage. In 1887, the Corps recommended to stop this method of improvement, effectively closing the Lower Wisconsin to commercial traffic.
Dredging was mandatory given the low flow of the Upper Fox. By 1899, dredging had created a 6-foot (1.8 m) deep channel to Berlin, a 4-foot (1.2 m) deep between Berlin and Montello, and a 3-foot (0.9 m) deep channel to the Portage. But the river soon filled with silt when dredging halted.
Initially traffic—primarily steamboats, tugs, and barges carrying primarily lumber, coal, and grain—was sufficient for operations. In 1867 the Corps reported that "[t]he country between Berlin and Portage is almost entirely dependent on the river for transportation". But the impact of railroads was soon felt. Travel and commerce on the Lower Fox declined by the 1880s to a few hundred tons of wheat per month during harvest. By this time most produce could be transported more easily by railroad. Except for a reprise during World War I, by the early 20th century most traffic was pleasure craft.
Upstream of the dam, Lake Wisconsin is one of several large lakes popular with boaters and fishermen.
There is little likelihood that commercial traffic will return to this reach in the near future.
The Portage
Current efforts are to restore the Portage Locks as a historical artifact. The Canal has been placed on the National and State Register of Historic Places through the efforts of the Portage Canal Society, Inc. In 1983, the downtown corridor between Adams Street and the Wisconsin River was restored with City of Portage and Block Grant funds. In 1987, the south bank of the canal became part of the National Ice Age Trail.
There is little likelihood that commercial traffic will return to this reach in the near future.
Upper Fox
The goal of the Wisconsin DNR is to restore the Upper Fox to a more natural state. All locks except for the most downstream at Eureka have been abandoned or removed. The dam at White River was removed in 2004. Plans are to remove all dams, except for those at Princeton and Montello downstream of Lake Puckaway and Buffalo Lake, respectively. The dam at Eureka has been converted into a fishway to allow spawning fish to migrate upstream, although the locks continue to operate.
thumb|View of Dam at Montello on the Upper Fox River.
There is little likelihood that commercial traffic will return to this reach in the near future.
Lower Fox
All of the locks along the Lower Fox have been placed on the National and State Register of Historic Places. Since 1983 efforts were made to save the locks from permanent closure. In 2001, the Army Corps of Engineers transferred ownership of the 17 locks that make up the Lower Fox River, Corps Office and property in Kaukauna, and the harbors of Stockbridge and Brothertown on Lake Winnebago to the State of Wisconsin. The Fox River Navigational System Authority was formed and a cost-sharing agreement was created. Funds from the Army Corps of Engineers, the State of Wisconsin, and private donations have combined to rehabilitate, reopen, and maintain the locks. While the locks on the entire Lower Fox (with the exception of Rapide Croche) have been restored and are capable of operation, some remain closed to navigation. The Menasha lock is closed to prevent movement of the round goby, an invasive species, into Lake Winnebago. An electric fish barrier is proposed to allow the lock to reopen. The Kaukauna locks are closed to navigation for 35 years until 2021 when repairs to Veterans Memorial Lift Bridge were completed by City of Kaukauna.
Rapid Croche Lock will remain permanently sealed as a barrier to sea lampreys. A boat lift and transfer station have been proposed to allow navigation through the entire Lower Fox River Navigational System. This transfer station would include measures to cleanse the boats of aquatic invasive species when traveling upstream into the Winnebago Pool.
thumb|View of a typical dam at the head of the Little Chute Locks and Canal along the Fox River.
There is little likelihood that commercial freight traffic will return to this reach. Recreational boats, and commercial tour boats, use the locks regularly.
Features
The following list of features are provided for the current waterway, from Lake Michigan to the Mississippi River east to west:
{| class="wikitable" style="text-align:center"
! width="75";|Location
! width="125"|Feature
! width="100"|Elevation
(lower pool)
! width="100"|Elevation
(upper pool)
! width="160"|River distance
from Green Bay
! width="160"|River distance
from Prairie du Chien
! width="100"|Comment
|-
| Green Bay || Green Bay || || || || ||
|-
| De Pere || Lock || || || || || Operating
|-
| Wrightstown || Little Kaukauna Lock & Dam || || || || || Operating
|-
| Wrightstown || Rapide Croche Lock & dam || || || || || Permanently closed. Boat lift planned for opening 2017.
|-
| Kaukauna || Lock 5 || || || || || Upgraded
