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HomeMy WebLinkAbout08-12-19 Drainage and Flooding Committee MeetingJAY MARTIN CHAIRMAN DANNY EARP VICE-CHAIRMAN CHUCK ENGELKEN MEMBER CITY OF LA PORTE DRAINAGE AND FLOODING COMMITTEE MEETING AGENDA STEV E G I L L ETT ALTERNATE Notice is hereby given of a meeting of the Drainage and Flooding Committee of the City Council of the City of La Porte, to be held August 12, 2019, in the City Hall Council Chambers, 604 West Fairmont Parkway, La Porte, Texas, beginning at 5:00 pm to consider the following items of business. 1. Call to order 2. Consent Agenda (Approval of Consent Agenda items authorizes each to be implemented in accordance with staff recommendations provided. An item may be removed from the consent agenda and added to the Statutory Agenda for full discussion upon request by a member of the Committee present at this meeting.) (a) Approve minutes of the meeting held on July 8, 2019. [Jay Martin, Chairman] 3. Staff Reports (a) Receive report from Harris County Flood Control District regarding current and future plans relating to flooding in the City of La Porte. [Lorenzo Wingate, P.E., C.F.M., City Engineer] (b) Presentation, discussion, and possible action regarding the status of current drainage projects. [Lorenzo Wingate, P.E., C.F.M., City Engineer] (c) Presentation, discussion, and possible action regarding additional drainage concerns and providing staff with direction. [Lorenzo Wingate, P.E., C.F.M., City Engineer] 4. Set date for next Drainage and Flooding Committee Meeting 5. Committee Member Comments Hear announcements concerning matters appearing on the agenda; items of community interest; and/or inquiries of staff regarding specific factual information or existing policy from the Committee members and City staff, for which no formal action will be discussed or taken. 6. Adjournment If, during the course of the meeting and discussion of any items covered by this notice, the Drainage and Flooding Committee determines that Closed or Executive Session of the Committee is required, then such closed meeting will be held as authorized by Texas Government Code, Chapter 551, Section 551.071 - consultation with counsel on legal matters; Section 551.072 - deliberation regarding purchase, exchange, lease or value of real property, Section 551.073 - deliberation regarding a prospective gift; Section 551.074 - personnel matters regarding the appointment, employment, evaluation, reassignment, duties, discipline, or dismissal of a public officer or employee; Section 551.076 - implementation of security personnel or devices; Section 551.087 - deliberation regarding economic development negotiation; Section 551.089 - deliberation regarding security devices or security audits, and/or other matters as authorized under the Texas Government Code. If a Closed or Executive Session is held in accordance with the Texas Government Code as set out above, the Drainage and Flooding Committee will reconvene in Open Session in order to take action, if necessary, on the items addressed during Executive Session. Persons with disabilities who plan to attend this meeting and who may need auxiliary aids or services are requested to contact the City Secretary's office (281-470-5019), two working days prior to the meeting for appropriate arrangements. Councilmembers may attend in numbers constituting a quorum. This is a Drainage and Flooding Committee Meeting at which there will be no deliberation or formal action taken by City Council as a governmental body. CERTIFICATE I, Lee Woodward, City Secretary, do hereby certify that a copy of the August 12, 2019, Drainage and Flooding Committee agenda was posted on the City Hall bulletin board, a place convenient and readily accessible to the general public at all times, and to the City's website, www.LaPorteTXgov, in compliance with Chapter 551, Texas Go\,emment Code. DATE OF POSTING TIME OF POSTING TAKEN DOWN Lee Woodward, City Secretary JAY MARTIN Chairman DANNY EARP Vice -Chairman MINUTES OF DRAINAGE AND FLOODING COMMITTEE MEETING HELD JULY 8, 2019 CHUCK ENGELKEN Member STEVE GILLETT Alternate Member The Drainage and Flooding Committee of the City of La Porte met on Monday, July 8, 2019, at the City Hall Council Chambers, 604 West Fairmont Parkway, La Porte, Texas, at 5:00 p.m. to consider the following items of business: Committee Members present: Jay Martin, Danny Earp, Chuck Engelken, Steve Gillett Committee Members absent: None Council -appointed officers present: Jason Weeks, Assistant City Manager; Lee Woodward, City Secretary Call to Order - Chairman Martin called the meetina to order at 5:00 o.m. 2 13 4 Statutory Agenda (a) Approve the minutes of the meeting held on May 13, 2019. [Jay Martin, Chairman] Committee member Engelken moved to approve the minutes of the meeting held on May 13, 2019; the motion was adopted, 3-0. (b) Receive report from Harris County Flood Control District regarding current and future plans relating to flooding in the City of La Porte. [Lorenzo Wingate, P.E., City Engineer] Lorenzo Wingate, City Engineer, and Jeremy Ratcliff, Harris County Flood Control District (HCFCD), discussed projects listed, HCFCD's plans for the full watershed, and the Committee's concerns over the prior treatment of the area and the time it is taking to move forward. (c) Presentation, discussion, and possible action regarding the status of current drainage projects. [Lorenzo Wingate, P.E., City Engineer] Committee members asked for updates on the Bayside Terrace Drainage Improvements and Little Cedar Bayou/F216/Phase III Improvements, urging that staff keep them as priorities. (d) Presentation, discussion, and possible action regarding additional drainage concerns and provide staff with direction. [Lorenzo Wingate, P.E., City Engineer] Vice Chairman Earp asked that answers be provided on the Sens Road/H Street Drainage as to why the ditches fill but not the pond. Without objection, Chair Martin set the item as an action item for the next meeting. Mr. Wingate reported that the outfalls along Roseberry were to be reviewed to see if an increase in pipe size was called for. Chair Martin noted that Fondren Road was tied into the Bayside Terrace project and asked if there were future concerns to be addressed with the new construction on Bay Area Boulevard. Mr. Wingate said water would be moved through a series of ponds before release and that the developer had submitted a drainage report approved by HCFCD. Set date for next Drainage and Flooding Committee Meeting The next meeting date was set for August 12 at 5:00 p.m. Committee Comments Members thanked Mr. Ratcliff for his attendance and information. ADJOURN — The meeting was adjourned without objection at 5:42 p.m. Page 1 of 2 July 8, 2019 - Drainage and Flooding Committee Minutes Lee Woodward, City Secretary Page 2 of 2 July 8, 2019 - Drainage and Flooding Committee Minutes REQUEST FOR DRAINAGE & FLOODING COMMITEE AGENDA ITEM Agenda Date Requested: August 12, 2019 Requested By: Lorenzo Wingate, P.E. Department: Public Works is Report Ir'' Resolution (" Ordinance Exhibits: HCFCD Drainage Network Map Sens Rd. Construction Drawings Appropriation Source of Funds: Account Number: Amount Budgeted: Amount Requested: Budgeted Item: (" Yes (" No SUMMARY Receive report regarding Harris County Flood Control District current and future plans relating to flooding in the City of La Porte. • Harris County Precinct 2 — Discussion of Sens Road drainage issue. • Harris County Flood Control District Update RECOMMENDED MOTION Approved for Drainage Committee Agenda Corby D. 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NFU Q M J�U' Ob'4� Q(i l- ¢iC7N arnq n�N 2a a....oN� m2�n �n�m uriim z v Z oar w LU Z -- --_-- r o a �2: V) 7FQ Q W Q tl ¢n az �mw ood --- o w t REQUEST FOR DRAINAGE & FLOODING COMMITEE AGENDA ITEM Agenda Date Requested: August 12, 2019 Requested By: Lorenzo Wingate, P.E. Department: Public Works is Report Ir'' Resolution (" Ordinance Exhibits: Project Map Project update chart Harris County Drainage Network Map Appropriation Source of Funds: Account Number: Amount Budgeted: Amount Requested: Budgeted Item: (" Yes (" No SUMMARY Refer to attached Exhibit(s) for updates on various drainage projects throughout the City. RECOMMENDED MOTION Approved for Drainage Committee Agenda Corby D. 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N N ° CL m w m O N U O .t.. a) m Q C a) °- Q N O O O.N. m N (fl A .�.. o a) T .& a) E -O U -0 O -O C V a� 5 m 3 _ m N N w 2 3 U 3 ... >' > w m 3 m m C a) _ O a) E m n N m� a� 3 o a) w C a) a; O E ox u, t E°° u, mm o ° D MNsw C o> S n m 0 a) 10 bo C O > .N O s m C ai a) N 0) 2-C O) O F m .� E a .N E 3 C E N '> H O N= O rn 0 C w p m n E a t m m .o 0 o E �) °) a°i n a m E w n o n N w n0) ° a E m w m w° O w m s. o m °� U w- `m E m U Co w° w s .N m U ° 3 m 3 � � m 0 ° 0 � t � � � o � n' o 'x n a) c 0 _ Q � -° o ° °� a) CL � co ate) E o c_ - m °- a) -0 U° m n a) O) d J X U J m> _ a) U O C >. m C V m y OL � '> E>, -O U> m 2 U E Q -0 C O2 a) OL m C O m= N 0)= 0 -r- 0 3 0 E 0 U 3 O a) N C C C OC)_ ... co coC m 7 m U o a) U E a) p N C 'O a) a) N m a) O 0 a) Q O t. a) L d '-' N° U O m O 'N O) _ N U C Q C a) O C U> O- 3 -O ._Q w -O a) ' N E a) N - N Q. X m m o 7 o O C N — O o° T m ° > O m m m N C m L m O C i ' m m N 2 U -0 0) m C N O O m L m � .� m X> U Q y T Q co a)a) 7 N E U E .0 d (n U 3 -C Q E CO E m a� _ C co _ a m .� E X E O U ui o o U a) .N. m a) . m -° .S a� O O w m O J ° U) a) m aE) n .� s N 3 'N � °� m o m E w a3i o °� m o w w .E > m n- X m w " Q :° � a) - 9) rn- u� m r ( C o w M : \ EL L j� REQUEST FOR DRAINAGE & FLOODING COMMITEE AGENDA ITEM Agenda Date Requested: August 12, 2019 Requested By: Lorenzo Wingate, P.E. Department: Public Works is Report Ir'' Resolution (" Ordinance Exhibits: Roseberry Flooding and Damage Map Rainfall Data from 7-22-19 Precipitation Frequency Estimates Carlow at Roseberry Images (1,2,3) Appropriation Source of Funds: Account Number: Amount Budgeted: Amount Requested: Budgeted Item: (" Yes (" No SUMMARY Opportunity to discuss any drainage concerns not covered by previous items. • Outfalls along Roseberry RECOMMENDED MOTION Approved for Drainage Committee Agenda Corby D. Alexander, City Manager Date 0 0 0 00 rl 0 m m 0 cr • 0 • 0 Harris County Flood Warning System Page 1 of 2 I...OGIN/REGIs rER Agency Harris County Flood Control District Subscribe to Location 230: 230 Big Island Slough @ Fairmont Parkway Real-time Alerts Last 12 Hours Reported from 7/22/2019 9:46 PM Show Current Conditions Stream Elevation .............Rainfall.......I L...................................................................' LL.......................................L.......................................................................................................................................................................................................................................................................................................................................................................................................... Weather Showing rainfall totals from 7/22/2019 10:00 AM to 7/22/2019 10:00 PM CDT ------------------------------------------------------------------------------------------------------------------------------------------------------------- Rainfalll Totals 230: 2.30 Bng Island 51ougih, @ Fairmont Parkway Total Raunfall 0.80 inches 018 Rainfall every 30 Minutes 0.7 0,6......... is 0,5 0.4 0.3 0,2 0.1 i 0 10:00 AM 12:00 PM 02:00 PM 04:00 PM 06:00 PM 08:00 PM 10:00 PM 11:00 AM 01:00 PM 03:00 PM 05:00 PM 07:00 PM 09:00 PM .Data not verified The following detail shows the rainfall that has fallen by the selected time span. The default selection matches the Rainfall totals in the graph above. Export to Excel 30 Minutes Reading Date From Reading Date To Rain 7/22/2019 9:30 PM 7/22/2019 10:00 PM 0.001, A 7/22/2019 9:00 PM 7/22/2019 9:30 PM 0.001, 7/22/2019 8:30 PM 7/22/2019 9:00 PM 0.001, 7/22/2019 8:00 PM 7/22/2019 8:30 PM 0.001, 7/22/2019 7:30 PM 7/22/2019 8:00 PM 0.001, 7/22/2019 7:00 PM 7/22/2019 7:30 PM 0.001, 7/22/2019 6:30 PM 7/22/2019 7:00 PM 0.001, 7/22/2019 6:00 PM 7/22/2019 6:30 PM 0.001, 7/22/2019 5:30 PM 7/22/2019 6:00 PM 0.001, 7/22/2019 5:00 PM 7/22/2019 5:30 PM 0.001, 7/22/2019 4:30 PM 7/22/2019 5:00 PM 0.001, 7/22/2019 4:00 PM 7/22/2019 4:30 PM 0.001, 7/22/2019 3:30 PM 7/22/2019 4:00 PM 0.001, 7/22/2019 3:00 PM 7/22/2019 3:30 PM 0.04" 7/22/2019 2:30 PM 7/22/2019 3:00 PM 0.001, 7/22/2019 2:00 PM 7/22/2019 2:30 PM 0.001, 7/22/2019 1:30 PM 7/22/2019 2:00 PM 0.001, 7/22/2019 1:00 PM 7/22/2019 1:30 PM 0.76" 7/22/2019 12:30 PM 7/22/2019 1:00 PM 0.001, 7/22/2019 12:00 PM 7/22/2019 12:30 PM 0.001, 7/22/2019 11:30 AM 7/22/2019 12:00 PM 0.001, 7/22/2019 11:00 AM 7/22/2019 11:30 AM 0.001, 7/22/2019 10:30 AM 7/22/2019 11:00 AM 0.001, 7/22/2019 10:00 AM 7/22/2019 10:30 AM 0.001, https://www.harriscountyfws.org/GageDetail/Index/230?span=24 Hours&v=rainfall 7/31/2019 Precipitation Frequency Data Server Page 1 of 4 NOAA Atlas 14, Volume 11, Version 2 Location name: La Porte, Texas, USA" Latitude: 29.6587°, Longitude:-95.07610 Elevation: 18.85 ft** c�I awl source: ESRI Maps ``ro ' ** source: USGS r m" " POINT PRECIPITATION FREQUENCY ESTIMATES Sanja Perica, Sandra Pavlovic, Michael St. Laurent, Carl Trypaluk, Dale Unruh, Orlan Wilhite NOAA, National Weather Service, Silver Spring, Maryland PF tabular I PF graphical I Maps & aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches) 1 Average recurrence interval (years) Duration ��� 10 25 501 100 200 500 1000 0.501 0.601 0.759 0.894 1.09 1.23 1.391.56 1.80 1.99 5-min (0.379-0.662) (0.457-0.781) (0.578-0.996) (0.671-1.19) (0.788-1.49) (0.873-1.74) (0.959-2.02) (1.05-2.32) (1.17-2.77) 0.792 0.952 1.21 1.42 1.73 1.97 2.22 2.48 2.83 3.10 10-min (0.600-1.05) (0.724-1.24) (0.917-1.58) (1.07-1.90) (1.26-2.38) (1.40-2.78) (1.53-3.22) (1.67-3.69) (1.84-4.36) (1.96-4.90) 15-min 1.01 1.21 1.53 1.79 2.17 2.46 2.77 3.10 3.57 3.94 (0.768-1.34) (0.921-1.58) 1 (1.16-2.00) (1.34-2.39) (1.57-2.97) (1.74-3.47) (1.91-4.01) (2.08-4.61) (2.32-5.50) (2.49-6.22) 1.47 1.74 2.17 2.54 3.06 3.46 3.89 4.37 5.07 5.65 30-min (1.11-1.93) 1 (1.32-2.26) (1.66-2.85) (1.91-3.39) (2.22-4.19) (2.44-4.88) (2.68-5.63) (2.94-6.50) (3.29-7.82) (3.57-8.92) 60-min 1.93 2.31 2.92 3.44 4.17 4.73 5.34 6.06 7.13 8.03 (1.46-2.55) 1 (1.76-3.00) 1 (2.22-3.83) (2.58-4.58) (3.02-5.70) (3.34-6.66) (3.69-7.75) (4.08-9.03) (4.63-11.0) (5.08-12.7) 2.31 2.89 3.76 4.55 5.71 6.67 7.73 8.95 10.8 12.3 2-hr (1.75-3.03) 1 (2.18-3.68) 1 (2.87-4.90) (3.43-6.04) (4.17-7.82) (4.74-9.39) (5.35-11.2) (6.03-13.3) (7.00-16.5) (7.79-19.3) 2.50 3.23 4.30 5.29 6.79 8.06 9.50 11.1 13.5 1 15.5 3-hr (1.91-3.28) (2.42-4.06) (3.28-5.57) (4.00-7.01) (4.98-9.30) (5.76-11.4) (6.59-13.7) (7.51-16.4) (8.83-20.7) (9.90-24.4) 2.87 3.86 5.26 6.61 8.67 10.5 12.5 14.8 18.3 21.2 6-hr (2.20-3.76) (2.88-4.77) (4.03-6.77) (5.01-8.71) (6.40-11.8) (7.51-14.7) (8.72-18.0) (10.1-21.8) (12.0-28.0) (13.6-33.2) 3.34 4.56 6.29 7.94 10.5 12.6 15.2 18.2 22.7 26.7 12-hr (2.56-4.34) (3.41-5.59) 1 (4.83-8.05) (6.05-10.4) (7.74-14.2) (9.10-17.7) (10.6-21.7) (12.3-26.6) (14.9-34.6) (17.1-41.6) 3.85 5.31 7.39 9.37 12.4 15.0 18.0 21.5 2 7 1-1 31.8 24-hr (2.97-4.99) (3.99-6.48) 1 (5.70-9.42) (7.16-12.2) (9.19-16.7) (10.8-20.8) (12.6-25.6) (14.7-31.5) (17.8-41.1) (20.5-49.4) 4.37 6.11 8.57 10.9 14.6 17.7 21.3 25.3 31.2 36.0 2-day (3.38-5.63) (4.59-7.39) 1 (6.64-10.9) (8.40-14.2) (10.9-19.7) (12.9-24.7) (15.0-30.3) (17.3-36.8) (20.6-47.0) (23.2-55.7) 4.74 6.64 9.31 11.9 15.8 19.4 23.3 27.5 33.4 38.2 3-day (3.68-6.10) (4.99-8.00) 1 (7.22-11.8) (9.15-15.4) (11.9-21.5) (14.2-26.9) (16.5-33.0) (18.8-39.8) (22.1-50.2) (24.7-58.9) 5.06 7.04 9.81 12.5 16.7 20.4 24.6 28.9 IF 34.8 1 39.6 4-day (3.93-6.50) (5.30-8.45) (7.62-12.4) 1 (9.64-16.2) (12.6-22.6) (15.0-28.4) (17.4-34.7) (19.8-41.7) (23.1-52.3) 5.81 7.92 10.8 13.7 18.2 22.3 26.9 31.4 37.4 42.1 7-day (4.53-7.43) (5.96-9.46) (8.43-13.6) (10.6-17.7) (13.8-24.6) (16.5-31.0) (19.1-37.8) (21.6-45.2) (24.9-55.9) (27.4-64.7) 6.46 8.65 11.7 14.7 19.3 23.6 28.3 32.9 39.0 43.6 10tlay (5.05-8.25) 1 (6.54-10.4) (9.11-14.7) (11.4-18.9) (14.7-26.1) (17.5-32.8) (20.1-39.8) (22.7-47.3) (26.0-58.1) (28.4-66.9) 8.61 10.9 14.2 17.3 22.1 26.3 30.9 35.4 41.6 46.4 20tlay (6.77-11.0) 1 (8.41-13.3) (11.2-17.8) (13.5-22.2) (16.8-29.5) (19.4-36.1) (22.0-43.2) (24.6-50.8) (27.9-61.9) 10.5 12.8 16.4 19.6 24.4 28.4 32.8 37.3 43.4 48.2 30tlay (8.24-13.3) 1 (10.0-15.8) (12.9-20.5) (15.3-25.1) (18.5-32.4) (21.0-38.8) (23.4-45.8) (25.9-53.4) (29.2-64.4) (31.6-73.5) 13.2 15.8 19.8 23.2 28.1 32.0 36.1 40.3 46.1 50.5 45tlay (10.4-16.7) 1 (12.5-19.6) 1 (15.7-24.8) (18.2-29.6) (21.3-37.1) (23.6-43.5) (25.9-50.3) (28.1-57.7) (31.1-68.3) (33.2-76.9) 15.7 18.4 22.9 26.6 31.6 35.4 39.2 43.1 48.4 52.5 60tlay (12.4-19.8) (14.7-23.1) J (18.3-28.8) (20.9-33.9) (24.0-41.5) (26.1-47.9) (28.2-54.5) (30.2-61.6) (32.7-71.7) Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90 % confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. https:Hhdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=29.6587&lon=-95.0761&dat... 7/30/2019 Precipitation Frequency Data Server Page 2 of 4 PF graphical PDS-based depth-duration-frequeincy (DDF) curves Latitude: 29.6587', Longitude: -95.0761' UV 50 40 dJ 30 'Cj 20 2 CL 10 0 E 'E r,� 6 A 0 0 Ln N 14 Duration 60 50 40 CL a) 'a 30 20 IL 10 0 ..... ........ ..... ....... . 1 2 5 10 25 50 100 200 500 1000 Average recurrence iinterval (yeairs) NOAA AtIlas 14, Volume 11, Version 2 Created (GMTY Tue jull 30 16:18:40 2019 Back to Torn Averaige recufrence mierval (yeara�P ......................................... 2 5 ............... 10 25 50 100 200 500 I DOO Duration 5-4,Wn 2-day 10,-4,niln 3-day I 54MV') 4-day 30-miln 7-day 60-carh I O-day 20-dlay 34ir 30-day 6-hr 46-day 12-hr 60-day 24-hr https:Hhdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=29.6587&1on=-95.0761&dat... 7/30/2019 Precipitation Frequency Data Server Page 3 of 4 Maps & aerials Small scale terrain Bryan College Math n Victoria 7oakm Omi Large scale map i heWoodlands S� WN1 uuuu https:Hhdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=29.6587&lon=-95.0761&dat... 7/30/2019 Precipitation Frequency Data Server Page 4 of 4 US Department of Commerce National Oceanic and Atmospheric Administration National Weather Service National Water Center 1325 East West Highway Silver Spring, Mr.) 20910 Questions?: HDSC.QuestionsCatnoaa.aov Disclaimer https:Hhdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=29.6587&1on=-95.0761&dat... 7/30/2019 ul"ll � /\� � �\ //� \11111I fol ,� � � � �\\\ � � � \ \ . ƒ (\} \ \ \ /� ® \. � \\` Afi » \ 2 \:: /�� AlkIld, \/� � \�� \f \:� \ � ƒ \. \: . ) \ /�� \\� � ° d