9 - Guadalupe Storm Drain Improvements — original pdf
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# # #* # #* # #* # #* #* # #* P C R ' ' 6 3 # #* #* # #* P C R ' ' 0 3 # #* # #* P C R ' ' 4 2 #* # # #* # #* T S E P U L A D A U G #* #* #* Central Park Pond Baker #* Center Detention #* # #* # #* 5' x 5' CBC 36'' RCP W 39TH ST E 39TH ST #* W 38TH HALF ST # #* 36'' RCP # #* 9' x # 4 #* .2' C B C !( # #* 7' x 5' CBC W 38TH ST #* # # #* # Y A W D E E P S E 38TH ST E 37TH ST F E U N E V A I T S H T F F R G I # #* #* W 35TH ST E 35TH ST D E U N E V A #* #* #* # # #* # #* !( !( !( !( C E U N E V A # #* # #* #* # # #* !( # #* # #* # #* #* # B E U N E V A # #* #* #* C B C ' 8 x ' 9 # #* #* #* # # #* #* !(!( # # #* 24'' RCP #* # 24'' RCP #* # # #* # # #* #* P # #* C R #* ' ' 0 3 N L E M O H W 35TH ST 24'' RCP # #* # #* # # W 34TH ST # !( !(!( !( !( !( !( !( # #* !( !( #* K R A P L L H P M E H I !( # #* C B C ' 5 . 5 x ' 9 #*#* ## # #* #* # C E D A R S T # P C R ' ' 4 2 #* # #* # #* C B C ' 8 x ' 0 1 # W 33RD ST W 3 2N D ST T S B M O C S P L I T S S M L E H E 33RD ST E 34TH ST T S S M O O R G E 32ND ST Legend #* # E 3 9 T H S T A V E N U E G 2D Simulation Area Existing Inlet Existing Storm Drain Pipe Proposed Inlet Proposed Storm Drain Pipe Channel COA ULT 100-yr Floodplain Parcel Boundary Existing Structure Pre-Project Inundated Structure Post-Project Inundated Structure Reported Flooding !( Building !( Yard !( Street Pre-Project 2-yr Inundation Localized Flood Depth (ft) 0.25' - 0.5' >0.5' - 1' >1' - 1.5' >1.5' - 2' > 2' City of Austin Guadalupe Street Storm Drain Improvements Figure G1 Post-Project Inundation and Benefit Maps 2-yr Sheet 3 of 3 ± 0 125 250 Feet Date: 1/17/2021 !( !( #* #* # #* 24'' RCP #* !( !( !( # #* 24'' RCP #* # # # #* !( !( !( !( !( !( !( 18'' RCP # #* !( !( !( !( #* # 24'' RCP #* # W 37TH ST #* !( !( #* T S H T U R F # #* #* !( !( !( !( # #* 24'' RCP 42'' RCP !( !( !( # R O N S O N S T T S G N K I MAIDEN LN #* W 33RD ST W 32ND ST W H E E L E R S T H E M P H I L L P A R K d x m . r y 2 _ t i f e n e B _ t c e o r P j - t s o P \ s t i b h x E i t c e o r j P - t s o P d n a t c e o r P j - e r P d e t a d p U \ s t i b h x E S G I \ i \ I l D S e p u a d a u G _ I N F _ 4 0 1 0 9 2 0 \ : P : h t a P t n e m u c o D W 31ST HALF ST LAUREL LN FIRM NO. 20690 Central Park Pond 5' x 5' CBC 36'' RCP W 39TH ST E 39TH ST # # #* # #* # #* # #* #* # #* P C R ' ' 6 3 # #* #* # #* P C R ' ' 0 3 # #* # #* P C R ' ' 4 2 #* # # #* # #* T S E P U L A D A U G #* #* #* Baker Center Detention #* #* # #* # #* # #* # #* # #* #* # B E U N E V A # #* #* #* C B C ' 8 x ' 9 # #* #* #* D E U N E V A #* #* #* # # #* # #* !( !( !( !( C E U N E V A # #* # #* #* # # #* !( #* W 38TH HALF ST # #* 36'' RCP # #* 9' x # 4 #* .2' C B C !( # #* 7' x 5' CBC W 38TH ST #* # # #* # !( !( #* #* # #* 24'' RCP #* !( !( !( # #* 24'' RCP #* # # # #* !( !( !( !( !( !( !( 18'' RCP # #* !( !( !( !( #* # 24'' RCP #* # W 37TH ST #* !( !( #* T S H T U R F # #* #* !( !( !( !( # #* 24'' RCP 42'' RCP !( !( !( # # #* #* !(!( # # #* 24'' RCP #* # 24'' RCP #* # # #* # # #* #* P # #* C R #* ' ' 0 3 N L E M O H W 35TH ST 24'' RCP # #* # #* # # W 34TH ST # !( !(!( !( !( !( !( !( # #* !( !( #* K R A P L L H P M E H I !( # #* C B C ' 5 . 5 x ' 9 #*#* ## # #* #* # C E D A R S T # P C R ' ' 4 2 #* # #* # #* C B C ' 8 x ' 0 1 # # R O N S O N S T T S G N K I MAIDEN LN #* W 33RD ST W 32ND ST W 33RD ST W 3 2N D ST T S B M O C S P L I W H E E L E R S T H E M P H I L L P A R K Y A W D E E P S E 38TH ST E 37TH ST F E U N E V A I T S H T F F R G I # #* #* W 35TH ST E 35TH ST Legend #* # E 3 9 T H S T A V E N U E G 2D Simulation Area Existing Inlet Existing Storm Drain Pipe Proposed Inlet Proposed Storm Drain Pipe Channel COA ULT 100-yr Floodplain Parcel Boundary Existing Structure Pre-Project Inundated Structure Post-Project Inundated Structure Reported Flooding !( Building !( Yard !( Street Pre-Project 10-yr Inundation Localized Flood Depth (ft) 0.25' - 0.5' >0.5' - 1' >1' - 1.5' >1.5' - 2' > 2' City of Austin Guadalupe Street Storm Drain Improvements Figure G2 Post-Project Inundation and Benefit Maps 10-yr Sheet 3 of 3 ± 0 125 250 Feet Date: 1/17/2021 T S S M L E H E 33RD ST E 34TH ST T S S M O O R G E 32ND ST W 31ST HALF ST LAUREL LN FIRM NO. 20690 d x m . r y 0 1 _ t i f e n e B _ t c e o r P j - t s o P \ s t i b h x E i t c e o r j P - t s o P d n a t c e o r P j - e r P d e t a d p U \ s t i b h x E S G I \ i \ I l D S e p u a d a u G _ I N F _ 4 0 1 0 9 2 0 \ : P : h t a P t n e m u c o D # # #* # #* # #* # #* #* # #* P C R ' ' 6 3 # #* #* # #* P C R ' ' 0 3 # #* # #* P C R ' ' 4 2 #* # # #* # #* T S E P U L A D A U G #* #* #* Central Park Pond Baker #* Center Detention #* # #* # #* 5' x 5' CBC 36'' RCP W 39TH ST E 39TH ST #* W 38TH HALF ST # #* 36'' RCP # #* 9' x # 4 #* .2' C B C !( # #* 7' x 5' CBC W 38TH ST #* # # #* # Y A W D E E P S E 38TH ST E 37TH ST F E U N E V A I T S H T F F R G I # #* #* W 35TH ST E 35TH ST D E U N E V A #* #* #* # # #* # #* !( !( !( !( C E U N E V A # #* # #* #* # # #* !( # #* # #* # #* #* # B E U N E V A # #* #* #* C B C ' 8 x ' 9 # #* #* #* # # #* #* !(!( # # #* 24'' RCP #* # 24'' RCP #* # # #* # # #* #* P # #* C R #* ' ' 0 3 N L E M O H W 35TH ST 24'' RCP # #* # #* # # W 34TH ST # !( !(!( !( !( !( !( !( # #* !( !( #* K R A P L L H P M E H I !( # #* C B C ' 5 . 5 x ' 9 #*#* ## # #* #* # C E D A R S T # P C R ' ' 4 2 #* # #* # #* C B C ' 8 x ' 0 1 # W 33RD ST W 3 2N D ST T S B M O C S P L I T S S M L E H E 33RD ST E 34TH ST T S S M O O R G E 32ND ST Legend #* # E 3 9 T H S T A V E N U E G 2D Simulation Area Existing Inlet Existing Storm Drain Pipe Proposed Inlet Proposed Storm Drain Pipe Channel COA ULT 100-yr Floodplain Parcel Boundary Existing Structure Pre-Project Inundated Structure Post-Project Inundated Structure Reported Flooding !( Building !( Yard !( Street Pre-Project 25-yr Inundation Localized Flood Depth (ft) 0.25' - 0.5' >0.5' - 1' >1' - 1.5' >1.5' - 2' > 2' City of Austin Guadalupe Street Storm Drain Improvements Figure G3 Post-Project Inundation and Benefit Maps 25-yr Sheet 3 of 3 ± 0 125 250 Feet Date: 1/17/2021 !( !( #* #* # #* 24'' RCP #* !( !( !( # #* 24'' RCP #* # # # #* !( !( !( !( !( !( !( 18'' RCP # #* !( !( !( !( #* # 24'' RCP #* # W 37TH ST #* !( !( #* T S H T U R F # #* #* !( !( !( !( # #* 24'' RCP 42'' RCP !( !( !( # R O N S O N S T T S G N K I MAIDEN LN #* W 33RD ST W 32ND ST W H E E L E R S T H E M P H I L L P A R K d x m . r y 5 2 _ t i f e n e B _ t c e o r P j - t s o P \ s t i b h x E i t c e o r j P - t s o P d n a t c e o r P j - e r P d e t a d p U \ s t i b h x E S G \ I i \ I l D S e p u a d a u G _ I N F _ 4 0 1 0 9 2 0 \ : P : h t a P t n e m u c o D W 31ST HALF ST LAUREL LN FIRM NO. 20690 # # #* # #* # #* # #* #* # #* P C R ' ' 6 3 # #* #* # #* P C R ' ' 0 3 # #* # #* P C R ' ' 4 2 #* # # #* # #* T S E P U L A D A U G #* #* #* Central Park Pond Baker #* Center Detention #* # #* # #* 5' x 5' CBC 36'' RCP W 39TH ST E 39TH ST #* W 38TH HALF ST # #* 36'' RCP # #* 9' x # 4 #* .2' C B C !( # #* 7' x 5' CBC W 38TH ST #* # # #* # Y A W D E E P S E 38TH ST E 37TH ST F E U N E V A I T S H T F F R G I # #* #* W 35TH ST E 35TH ST D E U N E V A #* #* #* # # #* # #* !( !( !( !( C E U N E V A # #* # #* #* # # #* !( # #* # #* # #* #* # B E U N E V A # #* #* #* C B C ' 8 x ' 9 # #* #* #* # # #* #* !(!( # # #* 24'' RCP #* # 24'' RCP #* # # #* # # #* #* P # #* C R #* ' ' 0 3 N L E M O H W 35TH ST 24'' RCP # #* # #* # # W 34TH ST # !( !(!( !( !( !( !( !( # #* !( !( #* K R A P L L H P M E H I !( # #* C B C ' 5 . 5 x ' 9 #*#* ## # #* #* # C E D A R S T # P C R ' ' 4 2 #* # #* # #* C B C ' 8 x ' 0 1 # W 33RD ST W 3 2N D ST T S B M O C S P L I T S S M L E H E 33RD ST E 34TH ST T S S M O O R G E 32ND ST Legend #* # E 3 9 T H S T A V E N U E G 2D Simulation Area Existing Inlet Existing Storm Drain Pipe Proposed Inlet Proposed Storm Drain Pipe Channel COA ULT 100-yr Floodplain Parcel Boundary Existing Structure Pre-Project Inundated Structure Post-Project Inundated Structure Reported Flooding !( Building !( Yard !( Street Pre-Project 100-yr Inundation Localized Flood Depth (ft) 0.25' - 0.5' >0.5' - 1' >1' - 1.5' >1.5' - 2' > 2' City of Austin Guadalupe Street Storm Drain Improvements Figure G4 Post-Project Inundation and Benefit Maps 100-yr Sheet 3 of 3 ± 0 125 250 Feet Date: 1/17/2021 !( !( #* #* # #* 24'' RCP #* !( !( !( # #* 24'' RCP #* # # # #* !( !( !( !( !( !( !( 18'' RCP # #* !( !( !( !( #* # 24'' RCP #* # W 37TH ST #* !( !( #* T S H T U R F # #* #* !( !( !( !( # #* 24'' RCP 42'' RCP !( !( !( # R O N S O N S T T S G N K I MAIDEN LN #* W 33RD ST W 32ND ST W H E E L E R S T H E M P H I L L P A R K d x m . r y 0 0 1 _ t i f e n e B _ t c e o r P j - t s o P \ s t i b h x E i t c e o r j P - t s o P d n a t c e o r P j - e r P d e t a d p U \ s t i b h x E S G I \ i \ I l D S e p u a d a u G _ I N F _ 4 0 1 0 9 2 0 \ : P : h t a P t n e m u c o D W 31ST HALF ST LAUREL LN FIRM NO. 20690 Existing Photos of Hemphill Branch Figure 1 - Existing W.33rd St. Outfall. Note non-original concrete slope paving with graffiti. Figure 2 - Upstream of W. 33rd St. outfall inside storm drain. Note layered construction materials and failing concrete Figure 3 - Erosion around channel headwall after flood event documenting results of roadway overtopping event. Figure 4 - Debris and scour behind existing armored channel after storm event. Figure 5 - Concrete failure in channel bottom. Typical throughout channel. Figure 6 - Original wall materials of channel that could be replicated at W. 33rd St. outfall