Where does the water come from?

Arch Street

As shown on the image , the elevation along Arch street going towards 32nd decreases gradually. It's also important to note the strange sudden increase in elevation at the corner of Arch and 32nd. From this information, it can be said that stormwater flows down Arch street eastward. However, stormwater seems to stop flowing at the corner right where the sudden increase in elevation occurs.

32nd

This image shows that the elevation decreases along 32nd going from Cuthbert Street to Cherry Street, suggesting that stormwater should flow northward. Due to the sudden drop in elevation denoted by the red arrow, the water is not capable of flowing down the road. Instead it just sits at the corner of Arch and 32nd.

Green stormwater infrastructure is much needed at the corner of 32nd and Arch due to this obscure dip in the road. Although there is an inlet located at that corner, it can't withstand heavy amounts of rainfall and the water has no where else to flow. This pool of water that accumulates serves as a hazard and inconvenience for both drivers and pedestrians.
Google Earth Pro was used to find the elevation at this site.

Comments

Stormwater Bump-Outs

What are they: “A stormwater bumpout is a vegetated curb extension that protrudes into the street either mid-block or at an intersection, creating a new curb some distance from the existing curb. A bumpout is composed of a layer of stone that is topped with soil and plants. An inlet or curb-cut directs runoff into the bumpout structure where it can be stored, infiltrated, and taken up by the plants (evapotranspiration). Excess runoff is permitted to leave the system and flow to an existing inlet. The vegetation of the bumpout will be short enough to allow for open sight lines of traffic. Aside from managing stormwater, bumpouts also help with traffic-calming, and when located at crosswalks, they provide a pedestrian safety benefit by reducing the street crossing distance.” Advantages/Benefits: -shorten crossing distances on streets (safer for pedestrians) -gives perception of road narrowing so drivers slow down in this area -reduce stormwater overflow -add curb a...

Right-of-Way Bioswales

What are they: Right-of-way bioswales are green infrastructures designed to capture stormwater runoff and alleviate the water, therefore reducing the number of water that enters the sewer system, and reducing the chance of sewer flooding. Bioswales are typically vegetated or mulched and treat water as it flows into the system, while also reducing the amount of water that does enter the system. They are best placed along streets and parking lots as it is easiest for them to care for and capture the water in those locations. Advantages/Benefits: Decrease the amount of pollutants in the water before it reaches the sewer, cutting costs of water treatment Water is absorbed by trees and plants through evapotranspiration Remaining water evaporates after the rain stops If the Bioswale reaches capacity, the water will flow out into the catch basin while following its normal pattern The plants used in the Bioswales help add to the atmosphere while providing a po...

What We've Been Doing From Lab 8 to Lab 9

Hey guys! This week, we have been working on getting the pictures in the correct format and collecting dimensions, as well as putting the finishing touches on the drainage area map. We also started to do work on the calculations, revising the final report, and creating and working on the presentation. Carolina added a more in-depth post about the work she did on formatting the pictures in Layout, and Ina and Alex added the results of their work on the drainage area map. Next week we will work on finishing the report, finishing the calculations, and finishing the presentation. Thanks for following our development, and below lie some pictures of our progress!

Group 073-09: The Deterioration of 32nd and Arch Street

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