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35-410: Davenport started to outgrow its previous city hall , which had been built on Brady Street from 1857 to 1858. The role of city government expanded during the mayoral administration of Henry Vollmer (1893-1896). Among his major achievements were several public works projects. Streets were paved in the older sections of the city and developers laid out new subdivisions around the perimeter. In 1895, in

70-558: A swaled drainage course with gently sloped sides (less than 6%). Bioswale design is intended to safely maximize the time water spends in the swale , which aids the collection and removal of pollutants, silt and debris. Depending on the site topography, the bioswale channel may be straight or meander. Check dams are also commonly added along the bioswale to increase stormwater infiltration. A bioswale's make-up can be influenced by many different variables, including climate, rainfall patterns, site size, budget, and vegetation suitability. It

105-408: A longitudinal slope to allow sediments to settle. Maximum slope of bioswales is 3:1. A minimum clearance is required to ensure that other infrastructure would not be damaged. The overfill drain should be located at least 6 inches above the ground plane to allow for maximum concentration time of stormwater runoff in the bioswales. Rocks can also be used to slow down the runoff velocity. The use of filters

140-403: A more inviting and aesthetically pleasing site as opposed to hard landscaping. The New York City Department of Environmental Protection (NYC DEP) has built more than 11,000 curbside bioswales, which are referred to as 'rain gardens'. Rain gardens are constructed throughout the city to manage storm water and to improve the water quality of city waterways. The care and tending of rain gardens

175-522: A portion of the financial windfall the city reaped in the mid-1890s. The bulk of the funds came from a new state law (the "mulct tax") which applied to the city's 150 illegal saloons and amounted to around $ 50,000 per year. This tax allowed for construction not only of City Hall, but also paved streets and a new sewer system, and from 1902–08, the city eliminated its property taxes altogether. Besides Vollmer there were two other noteworthy Davenport mayors associated with this city hall. Alfred C. Mueller served

210-586: A way that it no longer resembles the structure's original interior. In 2012 a concrete and brick building was torn down to the north of city hall and an $ 818,316 renovation of the 1963 addition provided a new entrance and sandstone walls that match the original 1895 building. It also added environmentally friendly features that include bioswales for stormwater and an electric car-charging station. [REDACTED] Media related to City Hall (Davenport, Iowa) at Wikimedia Commons Old City Hall (Davenport, Iowa) The Old City Hall , also known as Oxford Flats ,

245-399: Is also required to determine if the soil has a certain off-level of any pollutant. Phosphorus and high levels of salinity in the soil are two common pollutants that should be attended to. Analysis of inflow and outflow pollutant concentration is also another way to determine the performance level of bioswales. Maintenance can span to three different levels of care. Aesthetic maintenance

280-575: Is associated with municipal government and politics, it remains an apartment building. When it was originally built it exhibited elements of the Italian Renaissance Revival style, and it included a tower on top of the east elevation. It now reflects the Neoclassical style. The three-story, three bay , brick building was built on a stone foundation. The façade is dominated by a two-story polygonal oriel window that

315-523: Is important to maintain bioswales to ensure the best possible efficiency and effectiveness in removal of pollutants from stormwater runoff. Planning for maintenance is an important step, which can include the introduction of filters or large rocks to prevent clogging. Annual maintenance through soil testing, visual inspection, and mechanical testing is also crucial to the health of a bioswale. Bioswales are commonly applied along streets and around parking lots , where substantial automotive pollution settles on

350-635: Is important to prevent inlets from becoming blocked by sediments or trash. Two early examples of scientifically designed bioswales for large scale applications are found in the western US. In 1996, for Willamette River Park in Portland, Oregon , a total of 2330 lineal feet of bioswale was designed and installed to capture and prevent pollutant runoff from entering the Willamette River . Intermittent check dams were installed to further abet silt capture, which reduced by 50% suspended solids entering

385-446: Is important to take into account how the vegetation selected for the bioswales will grow and understanding what types of plants are considered the best fit. There are four types of bioswales that can be constructed based on the needs of the location. Bioswales require a certain soil composition that does not contain more than 5% clay. The soil itself before implementation should not be contaminated. Bioswales should be constructed with

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420-655: Is located just north of downtown along a commercial corridor in Davenport, Iowa , United States. It was individually listed on the National Register of Historic Places in 1983. In 2020 it was included as a contributing property in the Davenport Downtown Commercial Historic District . Designed by Davenport architect Willett Carroll, the building was built in 1857 as an engine house for a fire company. That year

455-491: Is ornamented with fleur-de-lis . The post and lintel entrance is on the left side of the east elevation, which is capped by a projecting cornice . The west elevation is topped with a half- hipped roof . Bioswale Bioswales are channels designed to concentrate and convey stormwater runoff while removing debris and pollution . Bioswales can also be beneficial in recharging groundwater . Bioswales are typically vegetated, mulched, or xeriscaped . They consist of

490-539: Is required to remove weeds that affect the performance of the other plants and the bioswale itself, clean and remove trash, and maintaining the looks of the vegetation. Partial restoration is needed when the inlet is blocked by sediments or when vegetation needs to be replaced. Full restoration is required when the bioswales no longer filter pollutants adequately and overall performance is severely lacking. Bioswales experience short, potentially intense, periods of rain, flooding and pollutant loading followed by dry seasons. It

525-764: The Democratic Party's war stance that lead the country into World War I and the anti-German sentiments that resulted. They were also opposed to the Republican Party's support for national prohibition of alcohol so they threw their support behind the Socialist Party of America . Two years prior to Barewald's election as mayor two Socialists were elected as aldermen and they were reelected in 1920. During his term as mayor, Barewald began several public works projects that put people to work and enhanced city improvements. The municipal natatorium

560-482: The Richardsonian Romanesque style. It is capped by a hipped roof . The heavy stone appearance is deceptive as the weight of the building is born by a steel frame. As is common with this style, the city hall integrates corner towers, gable ends, rustic stone, and Roman arches. Three stories of windows line the front of the building. The corner tower on the west side features a cone-shaped roof and

595-482: The 1880s and were renewed during the Progressive Era , especially between 1906 and 1916. Local ordinances were passed that exempted the city of Davenport from state prohibition laws and mayors, especially Ernst Claussen, stated that the citizen's personal liberties would not be violated. Debates were held in the city council and among other civic groups until Iowa's prohibition amendment was passed in 1916. It

630-433: The bioswales due to blockage. Structural inlets have become more common due to the ease of maintenance, use, and its effectiveness. Avoiding the use of floating mulch and selecting the best fit low-maintenance plants ensure better efficiency in the bioswales. Depending on a community's needs for a bioswale, a four step assessment program can be developed. Visual inspection, capacity testing, synthetic runoff, and monitoring are

665-764: The city council rejected sites along Washington Square and Court House Square for a new city hall, so in early 1858 the engine house's hall became the council chambers and other municipal offices were moved into other sections of the building. It continued to be used as a combination city hall and fire station until Hose Station No. 1 was built in 1877. A significant number of local industrialists and professionals served as mayor when this building housed city hall. They include George B. Sargent (1857), Ebeneezer Cook (1858–59), Hiram Price (1859), George H. French (1861-1862), John L. Davies (1865-1866), Michael Donahue (1867-1868), John C. Bills (1871, 1882, 1892), Ernest Claussen (1883-1889), and C. A. Ficke (1890-1891). The current city hall

700-421: The city during two separate periods (1910-1916, 1922–24). He was responsible for initiating the city's building code, sewer planning and construction, street paving, and planning and implementing improvements to the riverfront. Dr. C.L. Barewald (1920-1922) was the city's first Socialist mayor. Davenport's German community had become a political force by the early 20th century and they had become disenchanted with

735-409: The east tower a pyramid-shaped roof. Both tower roofs rise above the main roof. Above the entrance is a large clock tower that is taller than the rest of the building. An addition was constructed on the north side in 1963 and does not correlate to the original architecture. A $ 2.6 million renovation of the building was completed between 1979 and 1980 and as a result the interior was reconfigured in such

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770-416: The four steps that can be used to evaluate performance and maintenance of bioswales. Routine inspection is required to ensure that the performance and aesthetics of bioswales are not compromised. Time and frequency of inspections vary based on different local governments, but should occur at least once a year. Various aspects of inspection can take place, either visually or mechanically. Visual observation of

805-487: The midst of a deep national economic depression, Davenport built an ornate new City Hall. The cost was about $ 90,000 — an astronomical sum at that time — and the City constructed the new building without issuing any municipal bonds. Local legend has long suggested that the city retired the debt so quickly by taxing the city's brothels, but the fines levied against the brothels accounted for only between $ 7,000-$ 9,000 per year, just

840-585: The north of the project site. A total of two lineal miles of bioswale was designed into the project. The purpose of the bioswale was to minimize runoff contaminants from entering Sonoma Creek . The bioswale channel is grass-lined and nearly linear in form. Downslope gradient is approximately 4% and cross-slope gradient is approximately 6%. A relatively recent project established was the "Street Edge Alternatives" (SEA) project in Seattle, Washington , completed in 2001. Rather than using traditional piping, SEA's goal

875-401: The pavement and is flushed by the first instance of rain, known as the first flush . Bioswales, or other types of biofilters , can be created around the edges of parking lots to capture and treat stormwater runoff before releasing it to the watershed or storm sewer . Bioswales work to remove pollutants through vegetation and the soil. As the storm water runoff flows through the bioswale,

910-473: The pollutants are captured and settled by the leaves and stems of the plants. The pollutants then enter the soil where they decompose or can be broken down by bacteria in healthy soil. There are several classes of water pollutants that may be collected or arrested with bioswales. These fall into the categories of silt, inorganic contaminants, organic chemicals and pathogens . Bioswales can be implemented in areas that require stormwater management to regulate

945-435: The quality and performance of bioswales. It is beneficial at the planning stages to set apart easements to allow for easier maintenance of biowales, whether it be adequate space to locate machinery or safety to those working. Different types of filters can be used to catch sediments. Grass filter strips or rock inlets can be used to filter sediments and particulates; however, without proper maintenance, runoff could flow away from

980-605: The river system. A second example of a large scale designed bioswale is at the Carneros Business Park, Sonoma County, California . Starting in 1997 the project design team worked with the California Department of Fish and Game and County of Sonoma to produce a detailed design to channel surface runoff at the perimeter of a large parking area. Surface runoff consists of building roof runoff, parking lot runoff and overland flow from properties to

1015-448: The runoff velocity and decontaminate the runoff. Bioswales are created to handle the first flush of pollutants during the event of rain, therefore, locations that have high areas of impervious surface such as roads, parking lots, or rooftops can benefit from additions of bioswales. They can also be integrated into road medians, curb cutouts, sidewalks, or any public space. Bioswales are useful low-impact development work to decrease

1050-419: The vegetation, water, and inlets are all crucial to ensure performance. Some organizations utilize checklists to streamline the visual inspection process. There are different methods to determine if a bioswale needs maintenance. Bioswales are benchmarked to meet a specific level of infiltration to determine if maintenance is required. A staff gauge is used to measure the infiltration rate. Soil chemistry testing

1085-735: The velocity of stormwater runoff while removing pollutants from the discharge. They are extremely beneficial in protecting surface water and local waterways from excessive pollution from stormwater runoff. The longer the runoff stays within the bioswale, the better the pollutant removal outcome. It is also beneficial in removing standing ponds that could potentially attract mosquitos. Bioswales can also be designed to be aesthetically pleasing and attract animals and create habitats. Bioswales can also be beneficial for groundwater recharge . Improper maintenance can lead to high restoration costs to address inefficient bioswales. An accumulation of large sediments, trash, and improper growth of vegetation can all affect

Davenport City Hall - Misplaced Pages Continue

1120-492: Was built in 1895 and five years later the city sold this building to John Ochs’ Sons realty. The building was converted around 1910 into a residential building containing six flats, and the structure was dramatically altered to its present appearance. It was renamed Oxford Flats and it reflected the trend of building apartment buildings on the edge of the downtown area. While the structure is the oldest building in Davenport that

1155-410: Was built, new streets were opened and a major sewer was completed. Barewald and the other two Socialists were overwhelmingly voted out of office in 1922 because of the debts these projects and others incurred. The prohibition of alcohol was a major issue in the city of Davenport from the 1840s until national prohibition became official in 1919. The activities of the local temperance movement thrived in

1190-552: Was reinforced by the passage of the Eighteenth Amendment to the United States Constitution in 1919. However, the illegal production and consumption of alcohol continued in the city. City hall was designed by Davenport architect John W. Ross , and built by Morrison Bros. Construction Company. The 60-by-145-foot (18 by 44 m), four-story building is constructed of Ohio Berea sandstone in

1225-504: Was to create a natural landscape that represented what the area was like before development. The street was 11% more pervious than a standard street and was characterized with evergreen trees and bioswales. The bioswales were planted on graded slopes with wetland and upland plants. Other landscaping also focused on native and salmon-friendly plants. SEA provided a strong benefit for stormwater runoff mitigation that helped continue to protect Seattle's creek ecology. The project street also created

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