Hahamongna is the rare spot in the Arroyo Seco at the foot of the San Gabriel Mountains where the mountainous watershed meets the urban plain. Periodically floods roar into this basin. Bounded on the north by the mountains and Jet Propulsion Laboratory and on the south by Devil's Gate Dam, Hahamongna contains five unique habitat zones that only exist in alluvial canyons near the mountains. Most sites like this in Southern California have been destroyed.

Don't let Hahamongna go the way of other lost environmental treasures in Southern California.

The Meaning of Hahamongna

The original settlers of the region were sometimes called the Hahamongna Indians. The word means "Flowing Waters, Fruitful Valley" in the native Tongva language.

Top Ten Reasons
Why the County Should Do
An Environmental Impact Report

10.

Local residents need to be assured that every reasonable step has been taken to reduce negative impacts.

9.

Local communities — Pasadena, La Cañada Flintridge and Altadena — all need to be integrally involved in ensuring that the environment and neighborhoods are protected.

8.

Protecting invaluable habitat like the willow forest, the riparian streamzone and the alluvial scrub area has got to be a prime consideration in the planning and implementation, but it has not yet been adequately addressed.

7.

Diesel exhaust, traffic impacts and noise all need to be carefully studied and mitigated.

6.

An EIR will build public support for long-term sediment management and environmental protection in Hahamongna and other flood zones.

5.

Everyone will benefit from an EIR. It will ensure that the public and local communities are involved in the planning and that superior alternatives are considered.

4.

If this were really an emergency, the County would have begun a year ago; there are other more practical and economical ways to address any imminent threats.

3.

The emergency declaration the County is relying on doesn't include activities such as this $35 million habitat and sediment removal program.

2.

Everyone else has to do EIRs for major projects.

1.

Its the law.

The County of Los Angeles Depepartment of Public Works needs to stop shirking its responsibility to the public and to the environment and begin an Environmental Impact Report right away.

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