City of Laredo
Storm Water Design Criteria Manual
CityTexaslowNeeds reviewCitations verified
This extraction is flagged for quality review.
Compare each cited field to the official PDF before relying on it. What this means
South Texas municipal placeholder using San Antonio criteria — replace with city manual when available. Pipeline excerpt repair removed 1 unlocated citation(s).
Fields not found in document: document_metadata.jurisdiction_name
Other manuals in Texas: City of Amarillo, City of Arlington, City of Austin, City of Beaumont / Jefferson County Drainage District No. 6, City of Brownsville, City of College Station, City of Corpus Christi, City of Denton, City of El Paso, City of Fort Worth, City of Frisco, City of Garland, City of Grand Prairie, City of Houston, City of Killeen, City of Lubbock, City of McAllen, City of McKinney, City of Mesquite, City of Pasadena, City of Pearland, City of Plano, City of Round Rock, City of San Antonio, City of Waco, Dallas / North Central Texas (iSWM), Harris County, Tarrant County, Texas, Texas Commission on Environmental Quality
Document Metadata
Jurisdiction level
City
No evidence cited
State
Texas
No evidence cited
Version / edition
April 2019
No evidence cited
Adoption / effective date
2019-04
No evidence cited
Last revised date
2019-04
No evidence cited
Relationship to state manual
unknown
No evidence cited
Design Criteria
Design storm return periods (years)
1-year, 2-year, 5-year, 10-year, 25-year, 50-year, 100-year, 500-year
No evidence cited
Water quality volume method
null Laredo — city stormwater guidance portal 403; San Antonio drainage criteria as South TX pattern
No evidence cited
Peak flow calculation method(s)
Rational Method (Q = CIA) for drainage areas less than 200 acres, Modified Rational Method for detention ponds with drainage areas of 20 acres or less, Unit hydrograph method (preferably SCS Dimensionless Unit Hydrograph in HEC-HMS) for drainage areas 200 acres or greater and for detention ponds greater than 20 acres, Snyder Unit Hydrograph, Clark Unit Hydrograph, NOAA Atlas 14 Volume 11 rainfall intensities / depths for San Antonio and ETJ
No evidence cited
Hydrologic/hydraulic software
HEC-HMS (preferred for SCS Dimensionless Unit Hydrograph / unit hydrograph modeling)
No evidence cited
Approved BMP categories
Onsite detention facilities (Regional Storm Water Management Program option), Fee in-lieu-of (FILO) detention participation, Low Impact Development (LID) planning referenced in manual TOC
No evidence cited